1/ Unless we use electicity economically, we will have to pay enormous bills.

2/ I suggest that we should visit Voi mountain next Sunday,

3/ He asked me what did i watch,

4/ Ho Chi Minh city has many beautiful places

5/ I wish i could go to the cinema tomorrow

6/ Unless they ask, i won't lend my book

7/ There are so much smoke room,so i can't breathe

8/ The boys broke the window when they were playing football

9/ Although i am not agree, he sill borrow my book

10/ Most earthquakes on over the world occur on the Ring Of Fire

=>
A/
1. Unless we use electricity economically, we will have to pay enormous bills.
2. I suggest that we should visit Voi mountain next Sunday.
3. He asked me what I watched.
4. Ho Chi Minh City has many beautiful places.
B/
5. I wish I could go to the cinema tomorrow.
6. Unless they ask me, I won't lend them my book.
7. There is so much smoke in the room that I can't breathe.
8. The boys broke a window when they were playing football.