1. is the longest river in the world.
2. is not as tall as Nam.
3. watching television.
4. doesn't have any sugar.
5. hasn't met me for 3 years.
6. has taken a bath since last week.
7. haven't learned in centre together since last month.
8. coming to my house to eat pizza?
1. The Nile river is the longest river in the world.
2. Ba is shorter than Nam.
3. Nam likes watching TV.
4. The coffee doesn’t have any sugar.
5. He has not met me for 3 years
6. Minh has taken a bath for 1 week
7. John and Nam have not learned in centre for 1 month
8. How about coming to my house to eat pizza?