补全对话（5个小题，每小题2分，共10分）
A: Oh, You look tired. ______________ ?
B: I went to bed too late last night.
A: _______________?
B: At one o’clock in the morning.
A: That’s really too late. Why did you go to bed so late ?
B:______________. I didn’t finish my homework until 11:00 in the evening. After that, my tutor helped me learn English and math for two hours.
A: Dear me ! If you are tired in the classroom, how can you listen to the teacher well ?
B: Yes, you are right. _________________________________.
A: Slept ? Yesterday ?
B: Yes, I was really tired. What should I do ?
A: ______________________________. And it’s good for your health and study.
B: I guess I should. Thank you.
A: You’re welcome.
We Chinese held many activities to celebrate our country's 70th birthday on O 1st，2019．
Why do we make mistakes more when we feel tired？ This happens because parts of our brain actually fall asleep when we're awake and tired． （ easy ）
Recycling your rubbish is a great habit． However． it's even better to turn your rubbish into something new and ． （use）
According to some studies， the you read， the less you understand what you have read． （fast）
It's to talk with your mouth full．（polite）