By the time my parents reached home yesterday, I the dinner already.A．had cookedB．cookedC．have cookedD．cook 题目和参考答案——青夏教育精英家教网——

题目内容

By the time my parents reached home yesterday, I __________ the dinner already.

A．had cooked

B．cooked

C．have cooked

D．cook

A

“我做饭”发生在“父母到家之前”，故用过去完成时。

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