Question

【题目】Someone is ringing the doorbell. Go and see_________.

A. who is he B. who he is

C. who it is D. who is it

Answer 1

【答案】C

【解析】试题分析：句意：有人在按门铃，去看看是谁？因为是不知道的人，用代词it，而且因为是宾语从句，所以语序是陈述句语序，主语it在be动词前面，选C。