1/ I was absent from class yesterday because I was sick

2/ Minh is going to see the dentist because he has a toothache

3/  She has healthy teeth because she brushes her teeth after meals

4/ Children have toothache because they often eat a lot of candy

5/ He was happy because his decaying tooth stopped hurting

6/ We jog every morning because it's good for our health

Bài 2:

1. I was asent from class yesterday because I was sick.

2. Minh is going to see the dentist because he has a toothache.

3. She has healthy teeth because she brushes her teeth after meals.

4. Children have toothache because they often eat a lot of candy.

5. He was happy because his decaying tooth stopped hurting.

6. We jog every morning because it's good for our health.