按要求转换句型。

1. They are having a PE lesson. (对画线部分进行提问)

2. Jump up and down ten times.(改为否定句)

3. We have four lessons in the morning.(对画线部分进行提问)

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4. My sister often takes photos on Sunday.(改为一般疑问句并作否定回答)

5. I can put the grape on my head.(改为祈使句)