A:Hey, Peter! You look tired____?

B:I didn't get enough sleep last night.

A:Were you just doing your homework last night?

B:____ Mountains of homework, math, chemistry, Chinese … I didn't finish it until midnight.

A:Poor guy! No wonder you don't look well.

B:You know, less sleep is bad for my health. I am not as energetic (精力充沛) as before. Can you give me some____?

A: Sure. I advise you to make a plan before doing your homework. First things first. And you'd better do some outdoor sports.

B:____ I am going to follow your advice. Thank you.

A:Um … If you are too busy on weekdays, just relax yourself at weekends.

B:Weekends? No kidding. I have to take after-school classes at weekends.

A:You do?____?

B:Because my parents want me to get into a good high school.

A:Yes, I guess that is the reason. Perhaps you should talk to them and explain that health is the most important.

B:You are right. Thanks for all the good advice. I'll try to talk to them.

①北极地区是陆地

②南极地区是陆地

③北极地区被三大洋包围

④南极地区被三大洋包围