`a )` It's important to teach young people to cook

`\rightarrow` It is ( not ) + adj ( for O ) + to do sth : Như thế nào để làm gì

`b )` Students should walk to school instead of taking the bus

`\rightarrow` S + should / shouldn't + V : Nên / Không nên làm gì

`\rightarrow` Instead of + V-ing / N : Thay vì làm gì

`c )` Many people think that young people need to spend more time outside

`\rightarrow` S + think + that + Clause : Nghĩ như nào

`\rightarrow` Need + to do sth : Cần làm gì

`\rightarrow` S + spend + time + V-ing / sth : Dành thời gian ra làm gì

`\text{@ Tails347}`