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    【题目】Tom often helps his mother do _______ at home.
    A.clean
    B.cleaning
    C.cleaned
    D.is cleaning

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    【题目】I can’t understand what he said although he tried to make himself ____.

    A. to understand B. understand

    C. understood D. understanding

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    【题目】The boy promises (clean) the classroom after school.

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    【题目】The vegetables are good _______ us. So please eat________.

    A. for; less B. at; less

    C. for; more D. at; more

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    【题目】We shouldn’t watch _______ TV. It’s bad for our eyes.

    A. much too B. too many C. many too D. too much

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    【题目】UNICEF was __________ in Europe in 1946, after World War II.

    A. put up B. turned up C. set up D. given up

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    【题目】These problems are too hard to work out, ______?

    A. are they B. aren’t they

    C. is it D. isn’t it

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    【题目】Try (finish) your homework on time.

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    【题目】I often help my mother (do) some cleaning.

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    【题目】Do you enjoy (dance) or (sing)?

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