1. Lan plays the violin in the school's orchestra
⇒ Lan plays the violin at the school's orchestra
2. The magazines on his rack is in English
⇒The magazines on his rack are in English
3. After the first two lessons we have a twenty- minutes break
⇒After the first two lessons we have a twenty- minute break ( bỏ s )
4. After our vacation in Ha Long Bay , we returned to home by bus
⇒After our vacation in Ha Long Bay , we returned home by bus ( bỏ to )
5. We are happy hearing that you've passed the final exams
⇒ We are happy to hear that you've passed the final exams
6. How many times in a day do you brush your teeth?
⇒How many times a day do you brush your teeth? ( bỏ in )
7. The dirt on vegetable can cause you sick
⇒The dirt on vegetable can make you sick
8 .She bought some souvernisrs from the shop and so was I
⇒She bought some souvernisrs from the shop and so did I
9. Scientists say that the life started in the ocean
⇒Scientists say that life started in the ocean ( bỏ the )
10. Indoneisia is one of the strongest country in badminton
⇒Indoneisia is one of the strongest countries in badminton