1、U__________his brother,he has a good sense of humor.
2、The ____________(基本的）reason for his success is his hard work.
3、_____________(乘）2 and 6 together and you get 12.
4、The solar ____________(系统）was formed 4. 5 billion years ago.
5、Lucy picked up a lot of French __________(通过) playing with the native boys and girls.
6、Your__________(出场) is requested at the club meeting on Friday.
7、In this __________(暴力的) conflict, about 20 common people were killed.
8、It’s a (n)__________(谜) where all my money goes each week.
9、We should try our best to apply__________(理论) to practice.
10、That hotel is always full because it offers a friendly __________(气氛,氛围) and personal service.
