1. You (must) get up early tomorrow. 2. You (not / need) call a baby sitter. 3. We (may) watch the film tonight. 4. He (not / can) see me yesterday. 5. She (must) stay at school yesterday afternoon. 6. (may / you) go to the disco yesterday? 7. He (not / must) sleep now. 8. You (not / need) answer. 9. He (ought to) give evidence at the court yesterday. 10. Since he bought the new car he (not / can) sleep.