Ex.3
1. c
2. e
3. d
4. b
5. a
6. f
Ex.4
1. usually
2. at breakfast
3. four times a week
4. Once a week
5. Every day
6. during
7. once a year
Ex.5
1. How often do you wear a uniform?
2. When do you do your homework?
3. How often do you play sport at school?
4. When do you have your English class?
5. How often do you have a holiday?
6. When do you go to the hair salon?