Jim works for________organization against air pollution and he has made ________contribution to it. ...
2022-06-27 21:48:01 53次 福建省福州市2019-2020学年九年级上学期10月月考英语试卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
Jim works for________organization against air pollution and he has made ________contribution to it.
A.a; a B.an; a C.a; an
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