2.If she isn't more hard-working, she will get low marks.
3.If he listens to his parents, he won't fail
4.They have watched the movie for one hour
5.He has not cried for ten years
6.He hasn't gone abroad before
7.She has driven for 1 month
8.We have eaten since it started to rain .
9.Nam is interteded in watching television.
10. I have never talked to a freiger before.
Chúc bạn học tốt!Nếu được cho mình xin CTLHN nhé!
