He asked whether he (have) ______to do the whole experiment again if he failed i

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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

解析本题考查过去将来时。根据时态呼应原则，asked为一般过去式，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动词的过去将来式。

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