6. thì hiện tại đơn : Hoàn thành các câu sau .
1. ...Does..... Jack like eating hamburgers ? => Yes , he ...does.....
2. ....Do.... you get up early on Sundays ? => No , I ....don't....
3. ....Do.... the students always work hard for the exam ? => No , they....don't....
4. ....Does.... the train leave at noon every day ? => Yes , it ....does....
5. ....Does.... he often play the gutiar ? => No , he .....doesn't...
6. ....Do....  they take a taxi to school every morning ? => Yes , they ....do....
7. .....Do... Anna and Daisy visit their old teachers on winter holidays ? => No , they ...don't.....
8. ....Does.... water boil at 100 degrees Celsius ? => Yes , it ...does.....