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—Bob! How’s your project? I heard you started it last Friday, right?
—Oh! I ______ for it. But I haven’t decided when to do it.
A.had preparedB.was preparing C.have been preparingD.have prepared
C

试题分析:表示动作从过去某一时间开始一直持续到现在,并有可能持续下去,故用现在完成进行时。
点评:动词是谓语动所表示的动作或情况发生时间的各种形式。英语动词有16种时态,但是常用的只有9种:一般现在时、一般过去时、一般将来时、现在进行时、过去进行时、现在完成时、过去完成时、过去将来时、现在完成进行时。
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