按括号内的要求改写下列句子。
1. We stopped playing basketball because of the rain yesterday morning.(改为同义句)
We stopped playing basketball because________ ________yesterday morning.
2. Come here and sit down.(改为委婉语气)
________ you ________come here and sit down?
3. No one came to the sale because the weather was bad.(对划线部分提问)
________ _________ no one come to the sale?
4. The boy is too young to go to school.(改为同义句)
The boy is________ young________ he can't go to schoo1.
5. I visit my grandparents once a week.(对划线部分提问)
________ _________ do you visit your grandparents?
缺失，余留牙无松动。不正确的说法是（）
上设卡环
上设
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