social workers前加a还是an 急

social workers前加a还是an 急 social前用an还是a orange前加an还是加a some social workers()different skills.A.with B.has C.have D.are MP4前加a还是an不定冠词 a lot前加动词还是形容词? MP4前加an,a还是the exciting前加a还是an 单词 uncle前加a还是an eraser前加a还是an? black eraser前加an 还是a Asian前加an还是a American前加a还是an? 11前加a还是an information前加a还是an banana前加a还是an 英语翻译A small group of fewer than a hundred people caused trouble for workers at our city's most successful companytoday .句中“for workers 还有most 前为什么不加the 最高级不是都加的吗? 英语名词 加auseful前加a还是an