题目内容：

用括号内所给动词的适当形式填空

1.We are going to do more exercise _________ (keep) fit.

2.I am going to ___________ (be) a doctor when I grow up.

3.I’m going to practice __________ (play) the guitar every day.

4.When did you learn __________ (play) the violin?

5.—Shall we go to the movies tonight?

—That_________ (sound) interesting.