1.he HAD TO leave early,didn't he ?
2. his eyes were so bad that he COULDN'T read the number on the Board
3.there is the waiter . I WILL ask him for the bill
4. SHALL I open the door for you?
5. WILL you be able to come to the meeting?
6. my car broke down so i HAD TO come by bus.
7. MAY I ask you some questions?-OK go ahead.
8. there are a lot of mistakes in this exercise.i........................go over it again with you => will have to
9. he was a good swimmer,so he......................swim to the river bank when the boat sank => was able to
10. you...............go now.it's getting late => had better
11. you........................fly to london this evening provided you don't mind changing planes in paris =>can
12. a & c
13. must have been
14. may
15. Would
16. can
17. ought not to
18. couldn't