$\text{31.}$ C 

$\rightarrow$ Dẫn chứng : Most important tip for a healthy body is to have healthy food and eat them at proper time . 

$\text{32.}$ B 

$\rightarrow$ Dẫn chứng : Make sure you drink more amount of water daily .

$\text{33.}$ A 

$\rightarrow$ Dẫn chứng : Regular exercise will also keep your body in good health . 

$\text{34.}$ C 

$\rightarrow$ Dẫn chứng : By controlling your stress you can maintain a healthy body .

$\text{#Chae}$

$1. C$

$→$ Thông tin dòng 2 : Most important tip for a healthy body is to have healthy food and eat them at proper time

$2. B$

$→$ Thông tin dòng 6 : Make sure you drink more amount of water daily

$3. A$

$→$ Thông tin dòng 7 : Regular exercise will also keep your body in good health

$4. C$

$→$ Thông tin dòng 9 : By controlling your stress you can maintain a healthy body

$#Chán Chàn Channn :)))$