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

问题补充：

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

A. hang about

B. hang on

C. hang onto

D. hang up

答案：

A. hang about

(答案→)B. hang on

C. hang onto

D. hang up

解析：hang on 有“坚持、继续”的意思。