the dangerous building _______ now A .is being pulled B.is been pulled down C.is pulling down D.was pulling down

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the dangerous building _______ now A .is being pulled B.is been pulled down C.is pulling down D.was pulling down
the dangerous building _______ now A .is being pulled B.is been pulled down C.is pulling down D.was pulling down

the dangerous building _______ now A .is being pulled B.is been pulled down C.is pulling down D.was pulling down
应该选择B
pull down the building 是 拆除大楼 的意思
是人拆楼,所以楼是被拆.要用被动 be pulled down.
因为句子中有now,所以要用现在进行时 being pulled down.

A . is being pulled down

A
正确的tense

正在被拆毁
B
两个考点
is being正在被动时
pull down拆毁