Grammar C Circle the correct option.
1 Perhaps you should / must start taking your own
bags to the supermarket
2 You ought to / might tell your mother the truth.
3 When we were at school we might / had to use
recycled paper to do our assignments on.
4 It must / can't be that hard. Everyone seems to be
doing it.
5 She can't/mustn't be telling the truth.
6 You don't have to / mustn't come if you don't
want to.
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