12. The window is never opened ____ in summer.

A. but　 B. except　 C. except for　 D. but for

11. Nobody knows it ____ me.　　　　

A. except for　 B. except that　　 C. besides　　　 D. but

10.I don' t think Xiao Li is ____ the other students ____ mathematics.

A. after, on　　　 　 B. after, with　　　 C. behind, in　　　 D. behind, at

9. _____ hearing the news, I was wild ____ joy.

A. At, in　 B. On, with 　 C. After, by　 D. /, over

8. My father began to work ____ a bus driver when he was twenty years old.

A.for　　　　　 　　 B.to　　　　　　　　 C.at　　　　　　　　 D.as

7. This is a common mistake ____ students.　　　

A. between　 B.over　　 C. among D. about

6. If you run ____ two hares you will catch neither.　　

A.into　　 B.after　　　 C.off　 D. out of

5. His grandfather died ____ the wound that the enemy soldier had given him .and then his grand-mother died ____ hungry and cold.　

A.from,of　　 B.of,from　　　 C.from,from　　　 D.of.of

4. The teacher is not only strict ____ his pupils but also strict ____ his own work.

A. with, with　　　 B.in,in　　　　　 C. in, with　　 D. with, in

3. Mary dropped in ____ Mr Smith, but he　 wasn' t at home, so she went to drop in ____ Mr Smith's office.　 　　

A. on, on　　　　 B. at, at　　　 C. on. at　　　　　 D. at. on