题目内容：

用括号内所给单词的适当形式填空。

1.This _________(feel) makes him upset all day and night.

2.Mother lets Michael ___________ (not watch) TV all day because the final exam is coming.

3.He has a lot of trouble ___________ (work) out the problems.

4.I love the opera, Cats. It’s so _________ (fun).

5.Mrs. Green seems            (worry) because his son is ill.