EXTRA PRACTICE
115
7
G1
1
Complete these sentences about what police
officers
have to
do,
don’t have to
do and
mustn’t
do.
1
They
have to
arrive on time to work every day.
2
They
be rude to the public.
3
They
wear a uniform.
4
They
be very careful when they’re at a
crime scene.
5
They
damage the evidence.
6
They
study science.
2
Choose the correct verbs.
1
You
mustn’t / don’t have to
study law to be a
forensic scientist.
2
I
should / shouldn’t
spend some time with my
parents. I haven’t seen them for ages.
3
We
mustn’t / have to
commit crimes – it’s against
the law.
4
You
must / don’t have to
turn off your mobile phone
in class so that it doesn’t interrupt the lesson.
5
We
mustn’t / have to
have a passport to travel
outside the UK.
6
I
should / don’t have to
join the gym again – my
membership has run out.
7
You
have to / don’t have to
check your essays
carefully when you’ve written them.
8
We
mustn’t / don’t have to
get up early today, as it’s
a public holiday.
G2
3
Rewrite these sentences without changing
the meaning. Use the correct form of
had to
or
could
.
1
Was it necessary to tell the police everything?
Did you have to tell the police everything?
2
He wasn’t able to walk after the accident.
3
Were you able to understand that lecture?
4
They weren’t able to collect all the evidence at
the scene.
5
It wasn’t necessary to study economics at my school.
6
I was able to speak Russian when I was a child.
7
It was necessary to study Latin at our school.
8
Was it necessary for her to spend all that money
yesterday?
KL
4
Complete the text below with the phrases
in the box.
causes so This has led This means
We’ve had a lot of trouble in our town recently. A few
months ago, one of the biggest supermarket companies
in the country opened a huge shop in the centre of the
town.
1
to all kinds of problems: smaller shops
have closed
2
there isn’t a choice of shops any
more, and a lot of people come from villages around the
town to shop at the supermarket.
3
that there are
a lot more cars on the road, which
4
a lot more
noise in the town.
V1
5
Complete these sentences with words
from V1.
1
Someone
a crime.
2
go to the crime scene.
3
They take
from objects at the scene.
4
They collect other
and take it all to the
crime lab.
5
The scientists at the lab
the evidence …
6
… and they
information about the criminals.
7
The investigators
the crime.
V2
6
Find words in V2 for these definitions.
1
the study of living things
2
the study of the past
3
the study of illnesses and injuries
4
the study of the stars and planets
5
the study of natural forces, e.g. light and movement
6
the work of chemicals and how they change and
combine
7
the science of numbers and shapes
8
the study of the production and use of money
V3
7
Match the two parts of these sentences.
1
I’ve always been afraid
2
He’s studying the history
3
The police are interested
4
They received the report
5
The chemistry lab is separate
6
She’s always been successful
a
from the rest of the school.
b
in talking to a man at the crime scene.
c
of flying.
d
of the United States.
e
in solving difficult crimes.
f
from the forensic lab.
