连词成句。
1. what, is, time, it
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2. great, is, Beijing
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3. on, go, let's, trip, a
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4. work, in, school, hard, you
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5. my, rat, is, the, year, of, year, the
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6. Beijing, is, our, far, city, from
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7. I, to, like, walk, go, for, a
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