But for the guidance of our instructor( 导师 ) , we _______ in the experiment.
A.
shouldn’t succeed
B.
could not have succeeded
C.
will not succeed
D.
should not have succeeded
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【单选题】听力原文:M:How long did the exam take,Mary? W:We were allowed two hours,but I finished in less than half the time.My desk-mate Jean handed in her paper just in time. Q:How much time did the woman take for...