1. Peter didn't study hard, so he failed the exams.
-> Peter failed the exams because he didn't study hard.
2. Lan is the best student in her class.
-> No one in Lan's class is better than her.
3. She is very weak, so she can't carry the bag.
-> She is not strong enough to carry the bag
4. Ba likes visiting his grandmother on this weekend.
-> Ba enjoys visiting his grandmother on this weekend.
5. Riding your bike fast is dangerous.
-> It is dangerous to ride your bike fast.
6. Watching the circus on television is funny.
-> It is funny to watch the circus on television.
7. Thu has never eaten this dish before.
-> This is the first time Thu has eaten this dish.
8. She heard a sad news from her friend. She was so unhappy.
-> She was so unhappy to hear a sad news from her friend.
9. I haven't seen her for 2 years.
-> I met her 2 years ago.
10. I learn English. I want to go abroad.
-> I learn English so as to go abroad.
Chúc em học tốt nhé!!!!