1 We can leave the meeting early. E. We don't need to stay until the end.
2 We must leave the meeting early. C We can't stay until the end.
3 We mustn't leave the meeting early. A We must stay until the end.
4 We had to leave the meeting early. B We couldn't stay until the end.
5 We don't need to leave the meeting early. D We can stay until the end.
3 We don't need to reserve a table.
4 I had to work every evening
5 I want to know what happened. You must tell me.
6 You mustn't tell her.
7 I must go now or I'll be late for my appointment.
8 I had to wait half an hour for a bus.
9 We don't need to decide now.
10 iI mustn't forget to buy her a present.