一、根据句意和所给的中文提示,写出句子中的单词
1.Thanks for _________(加入) us?
2.He wants to be a _________ (音乐家) in the future.
3.Mr. Brown usually _________ (锻炼) at about six twenty.
4.I often brush my _________ (牙齿) after dinner.
5.He often has many _________ (睡梦) at night.