1. 根据句意及汉语提示完成句子。

1. （1） I am glad to  (收到……来信) you.

3. （2） The orange juice is a little  (酸的).

5. （3） -- Why are you  (紧张的)?

   -- Because the teacher wants to talk with my parents.

7. （4） We are  (自豪的) of some excellent players.

9. （5） My mother wanted me to have a  (尝试).