X.
1. Phong eats lots of junk food, so he is putting on weight.
2. I exercise daily because I want to stay healthy.
3. Sitting too close to the TV hurts your eyes.
4. She often takes paracetamol if she gets a bad headache.
5. How many calories do you burn doing aerobics for 2 hours.
6. Getting enough sleep helps students do their best in the classroom.
IX.
1. b
2. d
3. b
