A. It doesn’t matter.
B. You are welcome.
C. Yes, you are right.
D. Of course.
第1题:
A.don't
B.can't
C.couldn't
D.didn't
第2题:
“Must I return the book to the library in a week?”“No, you.”()
A. couldn’t
B. mustn’t
C. needn’t
D. won’t
第3题:
第4题:
第5题:
A.could help smile
B.wouldn't help to smile
C.couldn't help smiling
D.didn't help smiling
第6题:
5、鼻爆破只可能出现在成音节中,例如:couldn't,wouldn't,hadn’t。