Выберите и обведите правильный вариант.

1. We have discussed everything with him. I ... phone him today.

a) mustn't c) can't b) don't have to

2. I haven't spoken to him ....

a) already b) yet c) yesterday

3. Secretaries ... travel.

a) have to c) mustn't b) don't have to

4. Yesterday he ... work hard.

a) must b) had to c) has to

5. He had a sandwich for lunch, ... ?
a) hadn't he b) didn't he c) did he