题目内容
The dictionary ________ very useful for me.
A. proved B. was proved C. proving D. has been proved
A
prove此处是系动词,意 cv为“证明是,证实是”,后跟形容词作表语。

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题目内容
The dictionary ________ very useful for me.
A. proved B. was proved C. proving D. has been proved
A
prove此处是系动词,意 cv为“证明是,证实是”,后跟形容词作表语。