题目内容：

用括号内所给单词的适当形式填空（5分）

1.My father is             (please) with my school work this year.

2.          (leaf) turn yellow in autumn because of the cool weather.

3.It is my grandma’s              (ninety) birthday.

4.This problem is not difficult. I can do it by myself            (easy)

5.Most boys enjoy          ( watch) NBA games.