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I'm a pupil of Grade Five改为复数句
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你能帮帮他们吗
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I ________ in the city since I left school. I like this city very much now.
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No one knows ______effects the GM material might have on the food chain .
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We haven’t discussed ______ yet.
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如图所示,在四边形ABCD中,AD∥BC,要使四边形ABCD成为平行四边形还需要条件( )
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I think ______ in the old people’s home is great fun.
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