Bangladesh is a small country. Though it has a small area, ____.

Most of the rivers are getting polluted day by day. It is high time we stopped water pollution / to stop water pollution.

Explanation- [ It is high time Sub+V2.... or to + V1......]

Milk is rich in food values. We should take milk everyday so that we can keep our body fit

Mr. John is very interested in tourism. He wants to visit Bangladesh with a view to enjoying the natural beauty of the country.

Explanation- With a view to + V+ ing…………..

I like to play cricket in my leisure time. When I get a chance, I play cricket with my friends / I rush to a cricket field.

No nation can develop without education. So, it is rightly said that education is the backbone of a nation.

Mina really sings well. If she gets opportunity, she can become a famous singer [Zero conditional]