根据对话内容，从方框中选出适当的选项补全对话

A. What's wrong? B. Fine, thank you. How about you? C. It's very kind of you. D. I'm sorry to hear that. E. Let's make a plan (计划) first.

A: Hello, I'm so glad to see you again. How are you?

B:

A: Very well, thanks. But you look worried.  

B: I got a C in my English exam.

A:

B: I think English is too difficult for me. I don't think Chinese students have to learn it.

A: You know English is very useful.

B: You are right, but learning English is so hard.

A: It is hard, but it is important. Let me help you.

B:   I'll try harder．

A: I am glad to hear that.

B: Good idea. Thank you so much!

A: You are welcome.