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---Lucy, is maths difficult to learn in a foreign school? ---I’m not sure, but no subject can be learned well __________hard work.
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without
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through
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with
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 I’m going to America ________December.
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on
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in
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at
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for
Look! The children are listening _____ their teacher carefully.
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for
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in
—We’ll have a hiking trip, but when shall we meet?—Let’s make it half past seven        the morning of May 8.
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in
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You can call me ____ 0510-82234567 or e-mail me _____lily@changshu.com.cn.
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on, at
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at, on
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by, on
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on, on
We have sweaters          ＄15 each.
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in
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of