He was only an office boy before______the position.A、appointedB、appointingC、ha

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问题 He was only an office boy before______the position.

选项 A、appointed
B、appointing
C、having appointed
D、being appointed

答案 D

解析本题考查被动语态和介词的用法。介词before后面应加动词的动名词形式，根据句意，这里要表达的是被动含义。故正确的答案为D。

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