—Can you come to my party on Wednesday?—Sorry, I can't. I___ finish my homework.A. may B. would C. have to
We must have the machine ____.
He didn’t enjoy the play because he ____.
The dog ____ mad(疯的).
I think _____necessary(必要的) to learn English well.
____ were all very tired, but none of ____ would stop to take a rest.