Task 5. Choose the correct answer. 1. Let's go to the cinema together. - I'm sorry, I .... a) must b) can't c) mustn't d) can 2. You ... come here very early every day. We begin at 6. a) must b) can c) mustn't d) can't 3. ... use your phone? -No, I'm waiting for a phone call. a) Must I b) I must c) May I d) I may 4. Students ..... take the rubbish out. The cleaners will do it. a) don't have to b) can't c) must d) have to 5. .... tell me what time it is? a) Can I b) Must you c) Can you d) Must I