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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

試題分析:表示動作從過去某一時間開始一直持續(xù)到現在,并有可能持續(xù)下去,故用現在完成進行時。
點評:動詞是謂語動所表示的動作或情況發(fā)生時間的各種形式。英語動詞有16種時態(tài),但是常用的只有9種:一般現在時、一般過去時、一般將來時、現在進行時、過去進行時、現在完成時、過去完成時、過去將來時、現在完成進行時。
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