Open Up Resources Grade 6 Mathematics Answer Key Unit 6
Optimise B2 Teacher's Resource Centre © Macmillan Publishers Limited 2017. This sheet may be photocopied and used within the class.
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OPTIMISE YOUR GRAMMAR |
Answer key
Optimise B2
B2
UNIT 1
Standard
Countable and uncountable nouns, articles
Exercise 1
1
a
2
an
3
–
4
the
5
a
6
–
Exercise 2
1
the
2
the
3
–
4
a
5
an
6
an
7
a
8
–
Quantifiers
Exercise 3
1
a few
2
a lot of
3
Neither
4
No
5
a little
6
a large amount
7
little
8
a small number
Exercise 4
1
one
2
little
3
of
4
None
5
Every
6
Both
Unit round-up
Exercise 5
1
an
2
a
3
lots
4
–
5
neither
6
a few
7
–
8
a little
9
no
10
the
Higher
Countable and uncountable nouns, articles
Exercise 1
1
a
2
the
3
–
4
–
5
the
6
–
Exercise 2
1
the skiing holiday – a skiing holiday
2
✓
3
the ski classes – ski classes
4
an mountain – a/the mountain
5
✓
6
have the good time – have a good time
Quantifiers
Exercise 3
1
a lot of
2
Some
3
all
4
much
5
No
6
a number of
Exercise 4
1
Few people I know
2
were much too/more expensive
3
none of my friends do
4
How many times a
5
A number of good
6
There was little
Unit round-up
Exercise 5
1
an
2
an
3
number
4
The
5
one
6
little
7
too
8
the
9
a
10
None
UNIT 2
Standard
Present/past simple
Exercise 1
1
used up
2
ended up
3
passed
4
caught up
5
speak up
used to, would, be/get used to
Exercise 2
1
B
2
A
3
A
4
B
5
B
Present and past perfect simple
Exercise 3
1
have/'ve taken
2
have/'ve thought
3
had not / hadn't passed
4
has not / hasn't visited
5
had told
6
ended up
Exercise 4
1
still
2
already/just/now
3
before
4
since
5
yet
6
for
Unit round-up
Exercise 5
1
have/'ve (just) dug up
2
had/'d lost
3
were
4
used to be
5
tried
6
would/'d study
7
yet
8
to get used to
9
already
10
for
Higher
Present/past simple,
used to, would, be/get used to
Exercise 1
1
B
2
C
3
B
4
C
Exercise 2
1
inform
2
succeeded
3
would (always) start
4
got used to
Exercise 3
1
did not / didn't use to have
2
Were you (a student/pupil)
3
were not / weren't used to eating
4
would (often) make us pancakes
Present and past perfect simple
Exercise 4
1
Had they travelled much before they went to India?
2
Have you always lived in the same house?
3
Have they ever been to Paris?
4
Has Jack finished his degree yet?
Exercise 5
1
just; did not / didn't / could not / couldn't remember
2
already; has not / hasn't had
3
have told; yet
4
never/not; has not / hasn't improved
Unit round-up
Exercise 6
1
Do (you) play
2
Have (you ever) considered
3
used to play
4
had to
5
am/'m
6
does not / doesn't like
7
hung up
8
had/'d managed
9
had/'d ended up
10
has not / hasn't got used to
Optimise B2 Teacher's Resource Centre © Macmillan Publishers Limited 2017. This sheet may be photocopied and used within the class.
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OPTIMISE YOUR GRAMMAR |
Answer key
Optimise B2
B2
Exercise 2
1
will/'ll report
2
Shall (I) collect
3
will/'ll have moved
4
will come forward / are going to come forward
5
will/'ll have been working / will/'ll have worked
6
will/'ll have to
Zero and first conditionals
Exercise 3
1
B
2
A
3
C
4
C
5
A
6
C
Exercise 4
1
does not / doesn't come forward
2
will be
3
hear
4
lose
5
will increase
6
prove / can prove
Unit round-up
Exercise 5
1
am/'m going to relax
2
as long as
3
will/'ll have
4
figure out
5
unless
6
will/'ll have been reading
7
cannot/can't solve
8
will/'ll be staying
9
will/'ll get
10
will be travelling
Higher
Future tenses
Exercise 1
1
A
2
B
3
A
4
C
5
C
Exercise 2
1
will/'ll run
2
will have been writing
3
will be acting
4
will find
5
are/'re taking / are/'re going to take part
6
is/'s going to become
Zero and first conditionals
Exercise 3
1
lock
2
Do not / Don't give
3
have
4
will/can check
5
go
Higher
Continuous tenses
Exercise 1
1
have/'ve been exploring
2
has/'s been generating
3
had/'d been looking for
4
am/'m / will/'ll be carrying out
5
was eating
6
is not / isn't manufacturing
Exercise 2
1
they are working – they were working
2
they were delivering – they are delivering
3
✓
4
He had been surfing – He has been surfing
5
✓
Comparatives and superlatives
Exercise 3
1
much easier than I expected
2
it is/'s important to keep up with the latest technology
3
is a lot cheaper than yours
4
the worst idea ever
Exercise 4
1
as good as the
2
the best scientists ever
3
The longer it takes
4
even more important
Unit round-up
Exercise 5
1
had been skating
2
much colder
3
warmer
4
was working
5
most successful
6
was always coming up
7
mixed
8
more refreshing
9
the most popular
10
as important as
UNIT 4
Standard
Future tenses
Exercise 1
1
D
2
E
3
B
4
F
5
G
6
C
7
A
UNIT 3
Standard
Continuous tenses
Exercise 1
1
have been carrying out / are carrying out
2
is not / isn't downloading
3
are/'re trying / have/'ve been trying
4
had/'d been studying
5
are looking into
6
was not / wasn't / had not / hadn't been charging
Exercise 2
1
are/'re always borrowing my phone without asking
2
was wearing headphones while I was studying
3
had/'d been waiting for hours
4
has/'s been preparing her presentation for days
5
are/'re taking the train to Madrid tomorrow morning
Comparatives and superlatives
Exercise 3
1
B
2
B
3
C
4
C
5
A
Exercise 4
1
best by far
2
more interesting than
3
as useful as
4
the harder
5
(the) furthest
6
cleverer
Unit round-up
Exercise 5
1
better
2
had investigated / had been investigating
3
the best
4
most expensive
5
smaller
6
longer
7
even
8
have/'ve been experimenting
9
spending
10
am/'m taking / am/'m going to take
Optimise B2 Teacher's Resource Centre © Macmillan Publishers Limited 2017. This sheet may be photocopied and used within the class.
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OPTIMISE YOUR GRAMMAR |
Answer key
Optimise B2
B2
Exercise 4
1
Provided you wear the
2
Unless the crime lab produces
3
As long as you promise
4
in case the burglar tries
Unit round-up
Exercise 5
1
is/'s going to talk (to you)
2
am/'m going to make / give
3
will/'ll be
4
in case / so that
5
are/'re
6
if/provided
7
leave/keep
8
will/'ll have been going / will/'ll have gone / will/'ll be going
9
As long as / If
10
starts
UNIT 5
Standard
Modals (1): ability, permission, advice/criticism, obligation
Exercise 1
1
shouldn't
2
'm not allowed
3
ought to
4
don't have to
5
must
6
be able
Exercise 2
1
must move the (foot)ball
2
did not / didn't need to bring / need not / needn't have brought
3
ought to have listened
4
could race around the
Modals (2): degrees of certainty
Exercise 3
1
should be able to
2
might/may be
3
must show / must have shown
4
can't be
Exercise 4
1
may win the championship
2
should be available
3
could have won
4
must have gone
5
might not have ended
Unit round-up
Exercise 5
1
B
2
C
3
C
4
A
5
C
6
A
7
B
8
A
9
C
10
B
Higher
Modals (1): ability, permission, advice/criticism, obligation
Exercise 1
1
G
2
B
3
E
4
D
5
F
6
A
7
C
Exercise 2
1
are allowed to be
2
should get
3
could speak
4
will/'ll be able to compete
5
didn't / did not need to open
6
mustn't / must not talk
Modals (2): degrees of certainty
Exercise 3
1
can't have
2
may/might/could go
3
have/need
4
can't / could not / couldn't have
5
could be/become
6
must/might have
Exercise 4
1
ought to insist
2
could not / couldn't have been
3
might have been
4
can easily beat
5
may benefit from some
Unit round-up
Exercise 5
1
may/might/could
2
must
3
to
4
need/should
5
have
6
allowed
7
can/may
8
ought/need
9
must/are
10
can
UNIT 6
Standard
Verb patterns (1): verb + infinitive/
-ing
Exercise 1
1
to be 2 to copy
3
work
4
going / to go
5
preparing
6
working
Exercise 2
1
to volunteer
2
varying
3
to retire
4
to fill in for
5
working
6
to study
Verb patterns (2): infinitives of purpose
Exercise 3
1
as
2
in
3
to
4
than
5
to
Exercise 4
1
so as not to forget
2
in order to get some
3
prefer not to employ
4
so as to satisfy / so she could satisfy
5
had better give me
Unit round-up
Exercise 5
1
to get
2
working
3
being
4
(to) clean out
5
organising
6
to tell
7
to have
8
to gain
9
work
10
go
Higher
Verb patterns (1): verb + infinitive/
-ing
Exercise 1
1
to go
2
helping
3
watch
4
to meet
5
convincing
Exercise 2
1
to inform
2
to work
3
keying
4
editing
5
complain/complaining
Open Up Resources Grade 6 Mathematics Answer Key Unit 6
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