句型转换。
1. Jump on the train. (变否定句)
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2. Is everyone ready? (变陈述句)
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3. This is a red hat. (改复数句子)
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4. Li Ming is singing. (变一般疑问句)
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试题答案
1. Don't jump on the train.
2. Everyone is ready.
3. These are red hats.
4. Is Li Ming singing?