If the front Ateeth of a rodent Bdo not continue Cgrowing, they would be Dworn away.

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问题 If the front Ateeth of a rodent Bdo not continue Cgrowing, they would be Dworn away.

选项 A、
B、
C、
D、

答案B

解析 Do is an incorrect auxiliary in the condition clause of this present/future unreal conditional sentence. Correction: did.

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