if/ dirty/ won't have/ fresh water /drink / this/river/we / enough /is/ to
--> If this river is dirty, we won't have enough fresh water to drink.
it's not good to throw old clothes away
--> You shouldn't throw old clothes away.
how about going out to have breakfast?
--> let's go out for breakfast.
you do morning exercises regularly and you will have a good health
--> if you do morning exercises regularly, you will have a good health.
hurry up or you will be late for school
--> If you don't hurry, you will be late for school.