郑州旧货市场都卖什么:which cities are on the rivers ,what the cities are famous for?tell two cities is ok.

which cities are on the rivers ,what the cities are famous for?tell two cities is ok. Most hotels have exits__people can leave, if they are on fire.为什么用by which 而不用where？ Which national person are you? What are the three largest cities in China? are you on line 急急急！！We will then lift the reserves which are noted on the L/C.请教高手怎么翻译这句？ which standard are u studying?什么意思 on which 等于哪个单词啊?! on which/in which/at which/of which/for which /by which /with which 有什么区别和用处啊~!!!! we are on如何翻译?