根据对话情景和内容，从对话后所给的选项中选出能填入每一空白处的最佳选项。
Sandy is at home. She is now calling Lisa, her classmate.
Sandy: Hi, Lisa. Have you finished helping your parents?
Lisa: I finished cleaning the living room a little while ago, but I haven't cleaned my bedroom yet. 1_____
Sandy: I know what you mean. 2_____ Do you think you'll be finished soon?
Lisa: It should be done in about an hour.
Sandy: 3_____
Lisa: I did the English homework last night. 4_____ I don't understand it.
Sandy: Me neither. 5_____ We can help each other work it out.
Lisa: OK. Then we can go and have our hair cut.
Sandy: Great. See you in a little while.
A. I don't like math at all.
B. But I haven't started my math yet.
C. Housework is tiring, and I'm tired.
D. What do you think we should do then?
E. Why don't we do it together this afternoon?
F. Have you looked at Monday's homework yet?
G. I also hate doing the cleaning around the house.