Ⅰ.重点单词聚焦
1．It’s not a good idea to discipline the class by giving them________(额外的) homework.
答案： extra
2．The________(音乐家) will give a concert in his hometown at the invitation of the mayor.
答案： musician
3．He has________(赚) a lot of money this month by working on a parttime job.
答案： earned
