1.tens of thousands of
2 there are ten of thousands of foreigners come to Beijing every day.there are sb do sth?很奇怪啊
3 must show / must do 后面自己改
4 our the best face是不对的,our best face 或者 the best face
5 foreign friends
6 make Beijing green.Beijing 前没有the,后面的自己都去掉,in a green也很奇怪
7要我命了.真多,主语是air,does harm,almost dirty 也很别扭
8We must to do some things for aerial pollution,为了污染做事情?不要中文直译,to prevent pollution.
9 不要用NO1.2.3,用firstly secondly,lastly