If _______ to look after luggage for someone else, inform the police at once.

A. asked          B. to ask         C. asking       D. having asked

 

【答案】

A

【解析】

試題分析:考查非謂語動詞。由結(jié)構(gòu)分析可知前面部分是分詞做狀語,ask和句子主語之間是被動關系,所以用過去分詞,此處也可以看做是狀語從句if you are asked to look after luggage的省略。句意:如果有人讓你照看行李,要立刻通知警察。

考點:考查非謂語動詞。

 

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