should and must
5 ** Complete the sentences. Use must/
mustn't or should / shouldn't and the correct
form of the verbs in brackets.
You should take (take) a break You look tired
1_mustn't be (be) late. It's my English exam!
1 Frances
(stay) up so late at
night
2 In the UK, you
(drive) on the
left side of the road.
3 You
(clean) your teeth more
often. They're yellow!
4 We
(protect) wild animals if we
want them to survive.
5 You
(smoke) here. It's against
the law.
6 You
(buy) that CD. It's greаt​