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[主观题]
I could have done it for you if you______.A.ask me toB.asked me toC.have asked me toD.had
I could have done it for you if you______.
A.ask me to
B.asked me to
C.have asked me to
D.had asked me to
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I could have done it for you if you______.
A.ask me to
B.asked me to
C.have asked me to
D.had asked me to