题目内容
About 71% of the earth’s surface ______ covered with water, but 20% of the world population ______ have access to safe drinking water.
| A.is; doesn’t | B.are; don’t | C.are; doesn’t | D.is; don’t |
D
解析
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题目内容
About 71% of the earth’s surface ______ covered with water, but 20% of the world population ______ have access to safe drinking water.
| A.is; doesn’t | B.are; don’t | C.are; doesn’t | D.is; don’t |
D
解析