题目内容
About ________ of the earth is covered with water, but more and more water has been polluted.
A.three-forth B.three-forths C.three-fourth D.three-fourths
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题目内容
About ________ of the earth is covered with water, but more and more water has been polluted.
A.three-forth B.three-forths C.three-fourth D.three-fourths