Question

【题目】I want to know ________yesterday.

A. when did he come back B. when does he come back

C. when he came back D. when he comes back

Answer 1

【答案】C

【解析】句意：我想知道他昨天什么时候回来的。考查宾语从句。本句是宾语从句，从句需用陈述语序，可排除AB两项。根据yesterday，可知是一般过去时态，故选C。