Question

【题目】The doorbell is ringing. Please go and see .

A. who is it B. who it is

C. who was it D. who it was

Answer 1

【答案】B

【解析】句意：门铃在响，请看看是谁。根据语义可知，本题宾语从句。主句是一般现在时态，从句也为一般现在时态，且使用陈述句的语序。A、C项为疑问语序；D项为过去时态。故选：B。