Question

17. You (couldn't wait, didn't need to wait, need't have waited) for me.
18. I was afraid that if I asked him again he (can, may, might) refuse.
19. She (shall, will, dare) sit outside her garden gate for hours at a time.
20. (Should, Would, Shall) you like another cup of coffee?​

Answer 1

didn't

might

will

would

Answer 2

Answer:

17. couldn't

18. might

19. dare

20. would/ should

Explanation:

Should (Very formal)

Would (casual or formal both)