1. D

2. A

3. A

4. D

5. D

6? D

7. D

8. A

Q2

5. Would happen

6. Were

7. Would be

8. Had

9? Wouldn't

10? Would grow

Q4

2. If there weren't so many billboards in our city, people could enjoy the view

3. If there weren't so much light in the city at night, we could see the stars clearly

4? If we didn't turn in the heater all the time, we wouldn't have to pay three million dong for electricity a month

5. If the karaoke bar didn't make so much noise almost every night, the residents wouldn't complain to its owner

Q2

1.

Recycle

2. Won't dump

3. Will be

4. Will save

5? Will have

6. Continues

7. Will help

8. Travel

10? Fine

Q3

1. Would look

2. Would join

3. Would be

4? Wouldn't dump

5. Would happen

6. Were