- I study at school, do homework, play sports, do housework, and go to bed.
- I study at school in 8 hours, do homework in 4 hours, do housework in 3 hours, play sports in 1 hour, and go to bed in 8 hours.
- I use about 2330 caloires doing there activities.

a) Ta có a + 1 là số liền sau a mà a > 0 và 1 > 0 nên a + 1 > 0

b) Ta có a - 1 là số liền trước a mà a < 0 và - 1 < 0 nên a - 1 < 0

c) =_= sorry. K bít làm

1. Do you wash your hands before and after a meal?

=>Yes, I do.

2. Do you throw food wrappers in a bin when you finish eating?

=>Yes, I do.

3. Do you stop eating when  you start feeling full?

=>Yes, I do.

4. Do you eat lying on your stomach?
=>No, I don't.

5. Do you eat long before you go to bed?
=>Yes, I do.

23.There are two lamps in the living room. (câu này hình như bạn làm rồi đúng hông?)
24.We live on Tran Phu street in Ho Chi Minh City.
25.My father and mother are in the living room.
26.Her name is Thanh.
27.What does she do ?
28.Where do you live ?
29.Are these pens ?
30.What is it ?

There are five rooms in Lan's house.

tiếp tục FA vậy

3,4,6,9,13