句型转换。
1. There are lots of trashcans. (改为同义句)
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2. I'm going to help clean up the forest. (就画线部分提问)
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3. I agree with you. (改为否定句)
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4. You will be hungry, ______________? (完成反意疑问句)
5. We will take vacations on Mars. (改为一般疑问句)
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