Yesterday my parents and I __ our houseA.are cleaningB.cleanedC.are going to clean

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Yesterday my parents and I __ our house
A.are cleaning
B.cleaned
C.are going to clean

昨天我和我父母打扫了房间.
这是过去式,所以选择B

B

B

yesterday,所以用过去式,应为没有说确定是那个时间点在打扫房子,所以用一般过去式,所以选B!