`text{3. about}`

`text{4. for}`

`text{5. of}`

`text{6. at}`

III

`text{1.... because I was sick.}`

`text{2.... because he has a toothache.}`

`text{3.... because she brushes her teeth after meals.}`

`text{4.... because they often eat a lot of candy.}`

`text{5.... because his decaying tooth stopped hurting.}`

`text{6.... because it's good for our health.}`

`text{CHÚC BẠN HỌC TỐT!}`

`text{@tranhuulam2k9}`

1.about.

2.for

3.of

4.at

III.

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.