1. I prefer living in the country to living in the city
2. Are there green trees in forests in Viet Nam ?
3. The Great Wall of China is over 9m thick
4. The Nile River is 6.437 km long
1.I prefer in country to (in) city.
2.There are many green trees in the forests in Vietnam?
MÌNH CŨNG KO CHẮC NỮA!!!!