Đổi : 20% = 1/5

Gía bán : I----I----I----I----I----I

Gía mua : I----I----I----I----I

Vậy 1/4 = 25%

Vậy cửa hàng lãi 25 giá mua

1. Vitamins play an important role on our diet.

2. Getting enough rest helps you concentrate at school.

B2

1. Tickets are sold at the gate of the tourist site.

2. His father is generous and friendly.

3. They are going to have a meeting at the weekend

4. We must not let the children play in the kitchen because it is a dangerous place.

5. The Y&Y members are going to take part in the recycling program to save natural resources and earn money for the organization.

7. The town is becoming beautiful.

8. My father used to drive a car to work but now he goes by bus.

9. I spend 2 hours per day studying English.

10. Alexander Graham Bell was born in Endinburgh on March 3, 1847

1. Mr Nga goes to the supermarket on foot.

2. My living room has a television, a telephone and a stereo

1.C.surface mail

2.B.attended

3.D.humid

4.B.neighborhood

5.C.roof

6.D.before

7.A.more