答案:我敲了他的门但没人来开门
答案:我敲了他的门但没人来开门
A. is to do
B. does
C. had done
D. is done
A. speaks
B. spoken
C. speaking
D. saying
A. What? Can I help you?
B. It’s all right.
C. Yes, may I help you?
D. It doesn’t matter.
简答题
A. can’t
B. needn’t
C. mustn’t
D. won’t