Question

13. - Must I do the washing-up tonight? - _________________________________.

A. No, you mustn't if you don't want
B. Leave it if you're exhausted
C. Washing-up is really exhausting
D. Washing-up really takes up time
这题选B吗，为什么
3. - I wonder if you could help me. - _________________________________.
A. I could

B. Yes, I do

C. No, not at all

D. Of course

7. - Thanks a lot. You've gone to so much trouble. -
_________________________________.
A. It's no trouble at
all

B. That's all
right. I like it

C. I don't think it's a
trouble

D. That's very kind of
you

Answer 1

第一题选B
A的否定回答是错的，应该用No,you needn't或者是you don't have to, C D答非所问
下面两题分别选择D B
如需解释 欢迎追问
望采纳 谢谢

Answer 2

应该选B
CD 并没有回答这个问题 A 中must 提问，否定用needn't