- it makes him relaxed
- it helps him swim as fast as he can
- it helps him stay healthy
- it is the easiest swimming style
- he has a competition
- he is hot
- he is tired
- he wants to relax
- clean classrooms, halls, and the toilet area
- grow plants, water flowers
- help elderly people
- collect trash, clean the toilet area, and grow plants
- can sing and dance
- can sing, dance, or play musical instruments
- can write songs
- can cook
- unnecessary
- necessary
- fun
- important