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【高二语法】The experiments Dr.James Bond has devoted all his time

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【高二语法】
The experiments Dr.James Bond has devoted all his time to ________ successful.
A.prove B.proving C.proved D.be proved
应选C.这个句子的主干是The experiments proved successful.Dr.James Bond has devoted all his time to 是定语从句,修饰主句的主语the experiments.这个定语从句省略了引导词that或 which.这个引导词因为作"devoted all his time to"的介词to的宾语而省略.詹姆斯.邦德博士花费他所有的时间去做的实验是成功的