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

问题补充：

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

A. hang up

B. hang about

C. hang on

D. hang around

答案：

A. hang up

B. hang about

(答案→)C. hang on

D. hang around

解析：考查词组辨析：hang up挂断电话；hang about闲荡；hang on表“（在逆境中）坚持，不放弃”之意。hang around在某处附近等待，逗留。句意：学好英语不容易，但如果你坚持最后会成功的。选C。