摘要：( ) my parents reached home yesterday,I the dinner already. A.By ,had cooked B.By the time,have cooked C.By,have cooked D.By the time,had cooked
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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