摘要： By the time my parents reached home yesterday, I the dinner already . A. had cooked B. cooked C. have cooked D. cook
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By the time my parents reached home yesterday, I ________ the dinner already.
[ ]
A. had cooked
B. cooked
C. have cooked
D. was cooking
By the time my parents reached home yesterday, I ________ the dinner already.
[ ]
A. had cooked
B. cooked
C. have cooked
D. was cooking