根据句意及首字母提示, 把句子所缺单词补充完整。4S7A3f3U,Y2Y3u*w-v2m/m'e)]
Beijing is a b:V8R,|.o)[1_)d0U'Q city.4S7A3f3U,Y2Y3u*w-v2m/m'e)]