Question

III. Complete the sentences using the right modal verbs:
1. Boys and girls, you ... hand in your essays by Thursday.
2. Tom ... take a bus because his dad drives him to school every morning.
3. You ... tell me lies. It’s just awful.
4. We ... tidy up our room because our sister has already done it.
5. You ... smoke on board the plane.
 
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Answer 1

1 must

2 shouldn't

3 shouldn't

4 can't

5 can't