Exercise 3

1. off

2. busy

3. earn

4.mechanic

5.staffs

6.assistant 

Exercise 4

2.sales assistant

3.chef

4.director

5.coach

Exercise 5

colleague

chemist

fire fighter

boss

cook

staffs

1.E

2.A

3.E

4.F

5.K

6.O

7.L

8.A

9.A

10.S

1 I have a headache.

2 What is the matter with you?

3 You should not carry heavy things.

4 You should go to the doctor now.

5 What is the matter with him?

6 He has a headache and a fever.

nắng mưa

thông minh , nhanh trí , sáng dạ

Chai nước gel rửa tay sau khi tăng 15% là :

Hộp khẩu trang sau khi tăng 15% là :

Tổng số tiền :

 mẹ có thể mua cả chai gel rửa tay cả hộp khẩu trang