练习册

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  • 试题
    -Has Sam finished his homework today? -I have no idea. He it this morning. A. did B. has done C. was doing D. had done [错解] A [纠错心得] 这里的时间状语this moring很容易让考生误选一般过去时.句意为:Sam今天写完作业了吗?我不知道.他今天上午在做着呢.应该使用过去进行时.表示上午当时正做着.但不知是否完成.状语this moming前加上by.则可用过去完成时. [答案] C 【查看更多】

     

    题目列表(包括答案和解析)

    —Has Sam finished his homework today?

    —I have no idea. He ________ it this morning.

    A. did      B. has done   C. was doing D. had done

    查看答案和解析>>

    — Has Sam finished his homework today ?

    — I have no idea. He ______ it this morning.

    A. did       B. has done        C. was doing      D. had done

    查看答案和解析>>

    ― Has Sam finished his homework today?

     ―I have no idea. He  ______  it this morning.

          A. did                        B. has done              C. was doing             D. had done

    查看答案和解析>>

    —Has Sam finished his homework today?

    —I have no idea. He ________ it this morning.

    A. did            B. has done                                 C. was doing       D. had done

     

    查看答案和解析>>

    ---- Has Sam finished his homework today?

       ---- I have no idea. He ________ it this morning.

       A. did              B. has done         C. was doing        D. had done

     

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