4. As an orphan, Daisy ________ earn her living herself. |
|||
A. have to |
B. is able to |
C. has to |
D. may |
5. Peter ________ hear the speaker at the conference yesterday because the crowd was cheering so loudly. |
|||
A. couldn’t have to |
B. mustn’t |
C. doesn’t |
D. can’t |
6. I think you ________ consider Ellen for the position of manager. |
|||
A. could |
B. should |
C. must |
D. have to |