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    精英家教网 > 高中英语 > 题目详情

    A computer can only do ________ you have instructed it to do.
    A．howB．afterC．whatD．when
    C
    本题考查的是名词性从句作宾语的用法。此句的引导词既作连词又在宾语从句中充当一成分，故what最合适。
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