1. If we don't protect the environment, we will destroy ourselves.
2. If she don't be more hard-working, she will get low marks.
3. If he doesn't listen to his parents, he will fail.
4. They have watched the movie for one hours.
5. He has cried the last time since ten years ago.
6. He hasn't gone aboard before.
7. She has driven for 1 month.
8. We have eaten since it started to rain.
9. Nam is interested in watching TV.
10. I have never talked to the foreigner before.
# NO COPY chúc bạn hok tốt