Question

【题目】By the time my parents reached home yesterday, I_________ dinner already.

A. was cooking B. had cooked C. will cook D. have cooked

Answer 1

【答案】B

【解析】句意：当我父母昨天到家时，我已经做饭了。考查动词时态辨析题。already已经，用于完成时态，可排除AC选项。本句是时间状语从句，从句reached home是一般过去时，主句需用过去完成时，可排除D。根据句意语境，可知选B。