I . fill in the blanks with a suitable preposition .
1. the post office is not far ........... my house
2. let's meet .......... the city theater .................. 7 o'clock
3. Alexander graham bell was born ........... march 3rd , 1845 .................. scotland .
4. he worked ............... deaf - mutes .................... boston university
5. I'll come ................... to pick her ..................... at 8 o'clock
6. Mrs . Lan called ........ ........... her newspaper delivery
7. I couldn't meet Mrs . Chi because she's ...................
8. he worked very hard and finally came .................. a very important invention.