I . Fill in each blank with a suitable preposition
1. Hoa is studying lard .......... her exams
2. Liz talked very interestingly ............. her working day
3. Last week I had an important interview .......... a job
4. We want people to be aware ........ the problem of pollution
5. The area ........... the beach is full of trash
6. It started to rain . We couldn't keep ............ cleaning the beach
7. I like having new friends ............ other cities
8. What will we do if the streets are full .......... trash ?
9. If the climate changes we will meet .......... natural diasters
10. If I don't see you tomorrow , I will call you ..................