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Dad, my computer is broken. Must it _____ now?
A.is repairedB.has been repairedC.be repairedD.has repaired
C

试题分析:句意:爸爸,我的电脑坏了。它必须现在修理吗?It指代电脑,它与repair修理是被动关系,要用被动语态,系动词be+动词过去分词;句中有情态动词must,所以be要用原形,故选C。
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