Fill in the gap with one suitable preposition

Question I: Fill in the gap with one suitable preposition.
1. We can see many stars...........the sky at night.
2. You remind me.............my sister. 
3. They have only been there.............a few minutes.
4. The canoe overturned and everyone fell..............the deep water.
5. How.............going to Ben Thanh Market this afternoon?
6. I couldn't meet Mrs. Chi because she's ............
7. I'll come................to pick her...............at 8 o'clock.
8. They named their daughter...................their favorite singers.
9. The passage is written..............English.
Giải thích vì sao điền từ đó.