VII.
1. Lan didn't go to school because she was sick
b. My grandmother is the oldest person in my family
b. We have learnt English since we were in grade 3
b. If there is noise pollution, people and animals will have hearing problems
5. What is the length of the road
6. They're beautiful girls
7. The Mekong river is shorter than the Amazon river
8. Vietnam has a lot of rain
9. No one in my class is fatter than Hang
10. Mr and Mrs Hung are Nam's parents