1. If Mai wasn't lazy, she wouldn't fail the test
2. We haven't met each other for 6 months
3, Before they went home, they had finished their homework
4, If i had time, i would take part in the competition
5. John has worked for this company for 10 years
6. Before i went out with my friends, i had cooked the dinner.
7. He hasn't seen his parents since last year.
8, If John didn't eat too much chips, he wouldn't get fat.
9. If i had money, i would buy this car
10, We have had dinner since it started to rain
Học tốt!!!