根据句意及首字母提示在横线处填上恰当的单词，使句子意思完整，语法正确。
1. He went to bed very late yesterday, so he o this morning.
2. I'm afraid I have to r , or I'll be late for class again.
3. Don't forget to 1 the door when you leave.
4. His watch b down. He wanted to buy a new one.
5. On the Spring Festival, we visit our r and friends.
