THE WORD "ONCE" HAS A CLOSE MEANING TO_____. A. ON TIME B....

5. The word "Once" has a close meaning to_____.

A. on time

B. when

C. because

D. if

II. Choose the best option to fill in each blank: (1 pt)Environmental pollution is a term that refers to all the ways by (1)…….man pollutes his surroundings.Man dirties the air with exhaust gases and smoke, contaminates the water with chemicals and other substances,and damages the (2) …..with too many fertilizers and pesticides. Man also pollutes his surroundings in variousother ways. For example, people ruin natural beauty by scattering junk and litter on the land and in the water.Environmental pollution is one of the most serious problems (3) ………….. mankind today. Air, water,and soil are necessary to the survival of living things. Badly polluted air can cause illness, and even death.Polluted water kills fish and other (4) ….life. Pollution of soil reduces the amount of land that is available forgrowing food. Environmental pollution also brings ugliness (5)…….man’s natural beautiful world.