He asked whether he (have) ______ to do the whole experiment again if he failed

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问题 He asked whether he (have) ______ to do the whole experiment again if he failed in a single test.

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答案 would have

解析根据时态呼应原财，asked为一般过去时，其后的宾语从句要用过去时态；又因为whether引导的宾语从句本身又是一个主从复合句，从句为if引导的条件状语从句，主句用将来时态，所以此处空格应该用过去将来时。

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[originaltext]W:Howareyougettingonwithyourexperiment?M:Inspiteofmy