Puzzling sentences

1. The gift he give his friends.......books.
2. a) was b) were c) being
3. Hala is the only one of those students who.......got the full mark.
4. a) has b) have c) had
5. People......to Jupiter before the 22nd century.
6. a) won't go b) won't be going c) aren't going to go
7. I …..in a bank when I leave university. This is what I have already thought about.
8. a) am going to work b) will work c) am working
9. The bus is late. I have a feeling it…..before 5 o'clock.
10. a) won't arrive b) isn't arriving c) arrives
11. Our grandparents ……us this Friday, so a big surprise is waiting for them.
12. a) are visiting b) are going to visit c) will visit
13. Find the mistakes in the following sentences then write them correctly:
14. There has to be some people left in the town after yesterday's flood.
15. Air-conditioning damages the environment because it makes the indoors hotter.

My answers

1. The gift he give his friends.......books.
2. a) was b) were c) being
3. Hala is the only one of those students who.......got the full mark.
4. a) has b) have c) had
5. People......to Jupiter before the 22nd century.
6. a) won't go b) won't be going c) aren't going to go
7. I …..in a bank when I leave university. This is what I have already thought about.
8. a) am going to work b) will work c) am working
9. The bus is late. I have a feeling it…..before 5 o'clock.
10. a) won't arrive b) isn't arriving c) arrives
11. Our grandparents ……us this Friday, so a big surprise is waiting for them.
12. a) are visiting b) are going to visit c) will visit
13. Find the mistakes in the following sentences then write them correctly:
14. There has to be some people left in the town after yesterday's flood. (have to)
15. Air-conditioning damages the environment because it makes the indoors hotter. (environment)

I would be grateful if you gave me the correct answers.