根据语境补全句中的单词。
（1）Do you know ________________（为什么）?
（2）It’s an ___________________（请柬）to my birthday party.
（3）You were in China for two __________________（年）.
（4）Now there is a big __________________（操场）.
（5）I don’t have anything to do. I’m _________________（无聊的）.
---Is there a river in the city? ---No, _______
A. there is.B. there isn’t. C. there aren’t.
Pandas live ____ bamboo forests.
A. inB. onC. to
---Can you do the dishes? ---_________.
A. Yes, he can. B. Yes, I can. C. No, I can.
There _______ many chairs and a teacher’s desk.
A. areB. isC. /
There are_____ days in a week.
A. sixB. sevenC. eight