Điền từ còn thiếu vào chỗ trống, hoàn thành câu

1. The.........eldest boy is at.......college
2."Will Solowheel able to fly across the rivers?
-"......................................"
3.The Ao Dai is consideved the .......of VietNam 
4.People should turn off electrical appliances when not using them to......save.....electricity
5.Solar-powered ship doesn't pollute the environment because is doesn't have.......
6.Hung promises he( finish)............his homework tomorrow