Grammar Review for exam Units 1 to 3.
Possibility and certainty: may, might, could, must, can’t
the correct words, a, b or c.
treatment isn’t very good now, but it b improve in a few years.
a can’t b might c may
1 A heart transplant takes a long time. It be a very
a must b might c can’t
2 The medicine work because it’s new. We aren’t sure.
a can’t b must c might
3 This new therapy be more effective
than drugs. We’re hopeful.
a could b can’t c may
4 That new drug be effective. I
haven’t got better.
a must b could c can’t
5 Some patients enjoy zootherapy,
but others will be sceptical.
a must b may c may
Advice and obligation: should, must, have to
2 Complete the sentences with the modals in affirmative or negative.
Example: If you want to learn how to swim, you should take lessons.
1_ You smoke
in restaurants and cafés now – it’s illegal.
2_ You buy a
ticket to travel on a train.
3_ During the holidays, I go to school.
4_ You go to
bed late on a school night.