-Couldyoutellme         ?   -Sorry,I'mnotsure.   A.when...

问题详情：

-Could you tell me          ?

    -Sorry, I'm not sure.

    A. when can we take the Zhengzhou-to-Jiaozuo railway

    B. when we can take the Zhengzhou-to-Jiaozuo railway

    C. when could we take the Zhengzhou-to-Jiaozuo railway

    D. when we could take the Zhengzhou-to-Jiaozuo railway

【回答】

B

知识点：宾语从句

题型：完成句子