Question

By the time my parents reached home yesterday, I _____ the dinner already. A．had cooked B．c.

By the time my parents reached home yesterday, I _____ the dinner already. A．had cooked B．cooked C．have cooked D．was cooked

Answer 1

A

在英文中有by the time构成的时间状语从句，主句通常用过去完成时，结构为had+过去分词，故本题选A。