Here are suitable prepositions to fill in the blanks:

1. We’ll have to leave **before** lunch.
2. The street is full of traffic from morning **until** night.
3. Do you want to watch the sky **at** sunset?
4. They lived in Nha Trang **for** two or three years.
5. We haven’t seen our friends **since** last week.
6. Does it rain **in** Spring?
7. I usually do all my homework **before** going to school.
8. I’m busy just now but I’ll be with you **when** I finish the work.
9. The course begins **on** January 7th and ends **in** April.
10. Everyone is busy **during** Tet holiday.
11. Can I meet you **between** 7.15 and 8:00?
12. We met a lot of people **during** my holiday.
13. I don’t like traveling **at** night.
14. Where is Trang? She should be here **by** now.
15. Mrs. Nhung has gone away. She has been away **since** Friday.
16. There are a lot of people **in** the restaurant.
17. The people who live **at** number 44 are on holiday.
18. What does that sign **on** the wall say?
19. Have you heard of the strange statue **in** Easter Island?
20. Do you really want to spend the whole day **at** the beach?