1. The students are waiting ___ the classroom.
2. We usually have lunch ___ noon.
3. She walked ___ the bridge carefully
4. He is afraid ___ spiders.
5. The bus stopped ___ the hospital.
6. They have been friends ___ childhood.
7. The baby is sleeping ___ the cradle.
8. The cat jumped ___ the wall and ran away.
9. The meeting was postponed ___ heavy rain.
10. We went hiking ___ the forest yesterday.
11. She is sitting ___ her best friend in class.
12.The teacher explained the lesson ___ great detail.
13.The river flows ___ the mountains.
14. He is very good ___ mathematics.
15. They arrived ___ the airport just in time.
16. The bridge is made ___ steel.
17. She cut the vegetables ___ a sharp knife.
18. The manager is responsible ___ the project.
19. We walked ___ the beach enjoying the sunset.
20. The book was written ___ a famous author.
