2. What a lovely day! __(May/Shall we go for a work)__ (we / go) ? What/How about going for a work?3. I’m not sure where Gary is. He __may/might be_(be) at the library.4. That __can't be__ (not / be) Bill’s car. He doesn’t own one.5. Tom __may be sleeping__ (sleep) but I am not sure. Why don’t you go and see?6. Don’t worry. You __don't have to dress/needn't dress__ (not / dress) formally for the party.7. If you wanted to borrow my car, you __could have asked__ (ask) me.8. This dog __must belong__ (belong) to Harry. It’s got his address on its collar.9. Only authorized personnel __can enter___ (enter) this area.10. You __mustn't smoke/aren't allowed to smoke__ (not / smoke) in some public places.11. I saw John in the town center this morning. He __can't have gone__ (go) to Spain yet.12. Fortunately he _was able/managed to convince__ (convince) the police that he was innocent.13. Tom drives really well now. He __will be able to pass__ (pass) his driving test easily.14. She __can't/couldn't have been__ (be) at the party last night. She was ill.15. They _are to announce__ (announce) the winners on March 16th. It’s scheduled.16. She __has to/is to start__ (start) working on Monday. The Manager has told her to.17. I missed the film last night because I __had to work__ (work) late.18. Everyone in the world __must have__ (have) food and shelter.19. You __are to comply__ (comply) with the regulations. We expect you to do so.20. People __should treat___ (treat) animals in a better way but they don’t always do so.