When Lily came home at 5 p.m. yesterday, her mother ______ in the kitchen.
When Lily came home at 5 p.m. yesterday, her mother ______ in the kitchen.
A、was cooking
B、cooks
C、has cooked
D、cooked
【正确答案】:A
【题目解析】:【应试指导】本题考查时态。句意:当莉莉昨天五点到家时,她的妈妈正在厨房做饭。yesterday表示"昨天”,是过去时的标志。when引导时间状语从句时,若从句的动作发生时,主句的动作正在进行,主句要用进行时。因此本题主句应该用过去进行时。故本题选A。
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