题目：
句型转换。按要求完成下列句子，每空一词。
1. It is necessary to do eye exercises between classes. (改为同义句)
_____ eye exercises between classes _____ necessary.
2. Playing sports right after meals is bad for our health. (加good 变为选择疑问句)
_____ playing sports right after meals bad _____ _____ for your health?
3. You may watch TV for 2 hours tonight. (改为一般疑问句并作否定回答)
_____ _____ watch TV for 2 hours tonight?
_____ , you _____ .
4. I usually sleep 7 hours every night. (对画线部分提问)
_____ _____ do you usually sleep every night?
5. Don't walk on the lawn. (用must改写句子,其句意不变)
You _____ _____ on the lawn.
答案：
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下面是错误答案，用来干扰机器的。
参考答案：错
