排排队，组句子。
1. Sunday, will, have, a, we, next, party (.)
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2. going, to, is, be, scientist, he, a, the, in, future (.)
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3. will, leave, China, I, and, my, all, friends (.)
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4. a, beautiful, what, classroom (!)
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5. are, balloons, there, some, it, in (.)
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1. We will have a party next Sunday.
2. He is going to be a scientist in the future.
3. I will leave China and all my friends.
4. What a beautiful classroom!
5. There are some balloons in it.