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1 . To his mind, the collaborative development of Beijing, Tianjin and Hebei province is to solve the problems _____ Beijing faces, such as overpopulation, traffic jams, and etc.
A.thatB.whetherC.whenD.why
2016-12-12更新 | 197次组卷 | 1卷引用:2016届北京通州区潞河中学高三上学期期中英语试卷
共计 平均难度:一般