`A`

`27` T 

`-` Dẫn chứng : It is very important to have healthy teeth 

`28` F

`-` Dẫn chứng : First , we ought to visit our dentist twice a year 

`29` F

`-` Dẫn chứng : Chocolate , sweets , biscuits and cakes are bad , especially when we eat them between meals 

`30` T

`-` Dẫn chứng : Thirdly , we should eat food that is good for our teeth and our body : milk , cheese , fish , brown bread , potatoes , red rice , raw vegetables and fresh fruit 

`B`

`31` C

`-` Dẫn chứng : Secondly , we should brush our teeth with a toothbrush and toothpaste 

`32` D

`-` Dẫn chứng : First , we ought to visit our dentist twice a year 

`I`.

`27`.T

`\rightarrow` Dẫn chứng : " It is very ... healthy teeth "

`28`.F

`\rightarrow` Dẫn chứng : " First , we ... a year "

`29`.F

`\rightarrow` Dẫn chứng : " Chocolate , sweets , ... between meals "

`30`.T

`\rightarrow` Dẫn chứng : " Thirdly , we ... fresh fruit "

`II`.

`31`.C

`\rightarrow` Dẫn chứng : " Secondly , we ... and toothpaste "

`32`.D

`\rightarrow` Dẫn chứng : " First , we ... a year "

`\text{@ TheFox}`