【題目】—Do you know why the chemical plant wasn't built here?
—Because it ________ too much pollution to the air.
A.had caused
B.caused
C.will have caused
D.would have caused

【答案】D
【解析】考查虛擬語氣。句意：——你知道為什么這里沒有化工廠嗎? ——因為（如果建了化工廠）它對空氣污染太嚴重。此處省略了從句，表示與現(xiàn)在事實相反，主句用would have+過去分詞，故選D。

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