用所给词的适当形式填空。

1. Mr. Li _____ (make) maths so easy when he was a teacher.  

2. The supermarket is too _____ (crowd),  and I don't enjoy it.  

3. Does your sister enjoy _____ (do) homework with you?  

4. The Greens _____ (go)to South Africa to watch soccer games last year.  

5. The relaxing music made the patient(病人) _____ (feel) better.