1.People all over China are _____________ (欢呼)for the success of The 19th National Congress of the CPC.(党的十九大胜利召开)
2. What’s the ___________(高度) of the mountain?
3. He swims every day ___________(在……期间) the summer vacation.
4. There are many different kinds of books on those ________ (shelf) in the library.
5. He often _____________(讨论) problems with his classmates after class.
B.用括号内所给词的适当形式填空（每空不限一词）。（10分）6. We usually have a ______________ (week) test on Friday afternoon.