It is not easy to learn English well but if you hang you will succeed in the end .A. up

问题补充：

It is not easy to learn English well , but if you hang, you will succeed in the end .

A. up

B. about

C. on

D. down

答案：

A. up

B. about

(答案→)C. on

D. down

解析：可联系答.案.网客服索取。