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    题目列表(包括答案和解析)

    Be careful when you go ____ the street because the traffic
    is very busy at the moment.
    A．acrossB．behindC．betweenD．over

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    — Be careful! A car may hit you.
    — Thank you! I         I            so close to the road.
    A．didn’t know; am standingB．don’t know; am standing
    C．didn’t know; was standingD．didn’t know; would stand

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     Be careful to look _____ ways before you cross the street.

            A. both    B. all    C. either  D. neither

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    Be careful when you ________ the street. The traffic is heavy.

    A．goB．crossC．acrossD．crossing

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    —Be careful not to _______ anything behind. —Thanks. I have everything in my bag.

    A．leaveB．forgetC．loseD．miss

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