阅读下面的材料，在空白处填入适当的内容（1个单词）或括号内单词的正确形式。

Lucy： Hello, Mary, you look really tired. What's the matter?

Mary： I didn't go to sleep  midnight last night so I didn't get enough sleep.

Lucy： Sorry to hear that. Why don't you go to sleep  (early) tonight?

Mary： I hope so,  I have two after—school classes today. So I can only start  (study) after dinner.

Lucy： Maybe you should tell your parents  you can't do so many things.

Mary： I did, but they think it's important that I take more after—school  (class).

Lucy： Well, they  (possible) want you to get into a good senior high school.

Mary： Yes, I guess that's  reason.

Lucy： You should talk to your parents again. Explain that you need to get enough sleep to stay  (health).

Mary： That's a good idea. OK, I'll try to talk to  (they) again.