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题目内容
（贵州理工学院大学英语）
When Lily came home at 5 p.m. yesterday, her mother ______ dinner in the kitchen.
(A) cooked
(B) was cooking
(C) cooks
(D) has cooked
(A) cooked
(B) was cooking
(C) cooks
(D) has cooked
参考答案
