I’d appreciate it if you could tell me how________the machine.A、operateB、to ope

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问题 I’d appreciate it if you could tell me how________the machine.

选项 A、operate
B、to operate
C、operating
D、operated

答案 B

解析如能告知如何操作机器，我将非常感激。本题考查宾语从句的省略用法。名词性从句中有时可以用“疑问词what，which，who，how，when，where等+不定式”结构来替换，故选项B为正确答案。

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