Is evaporation always going on around us?

Yes; wherever there is water exposed to the air, evaporation is taking place.

Where does the most evaporation take place?

From the surface of the rivers, the lakes, and the ocean.

What becomes of the water when evaporated?

It is formed into fogs and clouds.

In what kind of air does evaporation go on most rapidly?

In air that is warm and dry.

Does evaporation take place in cool air?

It does; because clothing will dry during the coldest weather of winter.