III. Fill in each blank with a suitable preposition.
1. He walked_____the room___which we were sitting.
2. We live in a small village____the north-west of Dien Bien province.
3. My sister is keen________classical music.
4. Hoa: what time shall we meet?
Lan: _______8:00______Sunday morning.
5. This suit is different_____the one I saw yesterday.
6. They are very tired_______doing the same work day and day.
7. Nam : Would you like to come to my house____dinner?
Ba : I'd love to.
8. People are polluting the water by dumping waste____it.