1. 根据中文提示填写所缺单词。

1. （1） My grandpa is 98. He is o(年老的).

3. （2） The man is very f(有意思的).

5. （3） The teacher is old but the students are y(年轻的).
   

7. （4） My father is very s(严厉的) to us.

9. （5） Our English teacher is very k(和蔼的).