His plan _____ to be a perfect one. A.proved B.was proved C.

His plan _____ to be a perfect one.
A.proved B.was proved C.is proving D.proving
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mypigg 幼苗

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A

prove为系动词,意思是“被证明是”,其后跟“(to be)+形容词﹑名词等”作表语。

1年前

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