2 she has a bad headache yesterday,so she stayed at home

⇒vì S+has/have+O,so+V+o,mà she đi với has ,yesterday QKD nên chia v ed/v 2

3 you should take a rest and eat healthy foods

⇒vì S+should+V+a/an+n mà có 2 hành động nên dùng and để ngăn cách

4 will your mother take you to the dentist after school

⇔vì TLX will+S+V+o

5eat a lot of food is good for our healthy

⇔vì V+tính từ +giới từ+S

6 he shouldn't eat lots sweets because they have a bad in his teeth

⇒vì S+cụm should mà đằng sau có bị đau răng thì ko nên ăn kẹo ,shouldn't

7 were you sick yesterday

⇔vì ko có v nên tobe were vs you

8 hoa absented her class yesterday morning because she has ill

⇒vì S+ved ,yesterday QKD  +bởi vì +S+has/have ,vì she vs has