按要求完成下列各题。
1. There is a tree behind the house. (改为复数句)
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2. We can go to the theatre now. (改为否定句)
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3. is, late, too, it (.) (连词成句)
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4. me, about, you, zoo, tell, can, more, the (?) (连词成句)
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5. There are some sheep on the farm. (改为一般疑问句)
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