句型转换。
1. The books are in the bookcase. (改否定句)
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2. The baseball is under the bed. (改一般疑问句)
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3. The pictures are on the wall. (对画线部分提问)
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4. Is the CD on the sofa? (做肯定回答)
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5. Are the chairs next to the table? (做否定回答)
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6. on, T-shirt, the, his, is, bed (连词成句)
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