다음 중 어법상 가장 적절하지 않은 것은?
㉠Creating the electrical energy also creates environmental problems. We can’t give up electricity, but we can control the ways we use ㉡it. We can use alternative sources of energy that ㉢is not as harmful to the environment as those which we are presently ㉣using.
첨부파일첨부된 파일이 1개 있습니다.
다음검색