1. We can improve our imagination and creative skills ____ reading books.

A. by¡¡                                 B. of¡¡ 

C. for¡¡                                D. in

2. —How do you improve your English ____£¿

—I often talk with the people whose mother language is English.

A. population¡¡                         B. transportation

C. pronunciation¡¡                      D. suggestion

3. It takes us less time to go to Beijing because the ____ of trains has increased a lot.

A. price                                B. speed 

C. space                                D. service