______of the water_____polluted. We must try to protect our environment.
A.Two third; are | B.Two third ; is |
C.Two thirds; are | D.Two thirds ; is |
______of the water_____polluted. We must try to protect our environment.
A.Two third; are | B.Two third ; is |
C.Two thirds; are | D.Two thirds ; is |
试题篮
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