35. 5. You ____ pay too much attention to your English learning, as it is so important.

A. should　　　 B. must　　　　 C. cannot　　 D. needn’t

34. The old woman had a letter from her son in the army ____ to her.

　 A. read　　 B. write 　　C. written　　 D. received

33. The key ____ English well is to read more when ____.

　 A. to learn, possible　　　　　 B. of learning, possibly

　 C. of learning, was possible　　 D. to learning, possible