请阅读下面对话，根据其情景，从方框内七个选项中选出能填入下面对话的五个选项。

A. I'll have a try. B. What happened? C. What should I do? D. What are you going to do? E. I know you are good at math. F. I can help you with your study. G. They will be angry if they know about it.

A: Hi, Jack! You look worried..

B: Well, I didn't do well in my math exam.

A: How come?.

B: Yes, but everyone makes mistakes.

A: Did you tell your parents about the exam result?

B: No, I didn't. You know my parents are strict with me, so I'm afraid to tell them abut it..

A: I think you should talk about it with them.

B: Oh, no..

A: Don't worry! You're hard-working. I'm sure they will be understanding.

B: Maybe you're right..

A: Take it easy. Just learn from the mistakes and you'll do better next time.

B: OK. Thanks for your advice.

A: Not at all.