— I have in learning chemistry. Could you help me with it?— Sure I’d love to.A. successB

问题补充：

— I have in learning chemistry. Could you help me with it?

— Sure, I’d love to.

A. success

B. interest

C. trouble

D. fun

答案：

A. success

B. interest

(答案→)C. trouble

D. fun

解析：句意：我学习化学有困难，你能帮助我吗？当然，我很乐意。have trouble in doing sth在做某事方面有困难，故选C