13．It is very common ________(raise)money in Canadian and American schools．

12．We must take care of ________(us)．

11．It's so ________(fun)and interesting．

10．We are sure that conditions here will make you feel ________．(舒服的)

C)用所给单词的适当形式填空。

9．I am a new student，but I can ________ well ________(与……友好相处)all my classmates．They all like me．

8．He is always ________(对……满意)everything in life．

7．I'm looking forward to ________(收到……的来信)you．

6．Maria taught the children to sing lively songs and perform short plays to ________ them ________(使……高兴起来)．

5．On New Year's Day，I often r________ postcards from my friends and my classmates．

B)根据汉语提示，用短语或单词的正确形式填空，每空一词。

4．Cycling can help us save energy and it can also a________ air pollution．