3. Yang Liwei received the mission __ space, __ the mission, he took the picture of the earth.

　　 A. to, with　 B. to, on　 C. of, during

2. Several bridges have been built __ the Songhua River, and they make people go __ it easily.

　　 A. on, through　 B. across, on　 C. over, across

1. Light comes in the room __ the window. It makes me comfortable.

　　 A. through　 B. across　 C. over

12. They went ____ the bridge to the big city.

11. I learn English by myself ____ the Internet for free.

10. The teacher begins his class ____ a song.

9. There are seven bridges ____ the stream.

8. The mouse went ____ the hole

7. There are three oranges ____ the table.

III. across / on / through / with / over

6. A lamp hangs ____ us.