连词成句。
1.in, to, what, trees, spring, happens, (?)
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2.to, I, the, clouds, at, sometimes, look, like, (.)
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3.colour, leaves, are, what, autumn, the, (?)
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4.to, swim, like, summer, in, I, (.)
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5.in, like, sit, sun, the, I, to, (.)
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