Find the mistake and fix it

----- Nội dung ảnh -----
1. Having leisure activities are truly important to the elderly:
A
B
C
D

2. Some people think young people should to follow the tradition of the society.
A
B
C
D

3. I am very interesting in problems caused by pollution.
A
B
C
D

4. You should participate in the recycling program.
A
B
C
D

5. If you work hard, you would be successful in anything you do.
A
B
C
D