1. (2020九上·吉林月考) 根据对话内容，运用方框中所给的句子选项补全对话。选项中有一项是多余的。

( A father and his son are climbing mountains in Jingyue Park. )

Father: Come on, Son! We are coming to the top of the mountain.

Son: Dad, I'm tired! 

Father: Son, you really need to exercise.

Son: Sure it is.

Father: Yes. You are busy with your studies all day. Don't forget health comes first.

Son: I see, Dad. In fact, we play sports an hour a day at school now.

Father: Really?

Son: From 3:00 pm to 4:00 pm every day.

Father: What sports do you play?

Son: Basketball and football.

Father: That's great! If you play sports every day, you will be much stronger.

Son: I think so. Oh, look!

Father: The air is fresh, too. Let's come and hike here every week, shall we?

Son: Good idea!

A. When do you play sports? B. I can't walk any farther. C. What's your favorite sport? D. The sight here is so beautiful! E. Is this why you take me out here? F. I'm crazy about ball games, you know.