1. - The last time Mai painted posters was 2 years ago.
- Mai hasn’t painted posters for 2 years.
2. Ba has done the housework for 1 hour.
3. Minh has never eaten a sandwich before.
4. We were made to work hard in very hot weather.
5. She told her dad she didn’t want to go with him.
6. Hai asked Mai what her father did.
7. I apologize Nga for breaking her bike.
8. Hoa offered Nam some fruit.
9. - Because the homework is difficult, I can’t do it.
- Because of the difficult homework, I can’t do it.
10. - Although she is very tired, she will help us.
- Despite her tiredness, she will help us.
11. - She drives less carefully than her sister.
- Her sister drives more carefully than her.
12. - My house is not as modern as that house.
- My house is less modern than that house.
13. If the film were not boring, I wwouldn’t feel sleepy.
14. If you don’t keep silent, you’ll get a bad work.