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

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

题型:不详难度:来源:
If _______ to look after luggage for someone else, inform the police at once.
A.askedB.to askC.askingD.having asked

答案
A
解析

试题分析:考查非谓语动词。由结构分析可知前面部分是分词做状语,ask和句子主语之间是被动关系,所以用过去分词,此处也可以看做是状语从句if you are asked to look after luggage的省略。句意:如果有人让你照看行李,要立刻通知警察。
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