---I visited the Qinhu Lake last Sunday. ---______ Why didn’t you tell me earlier?
The number of giant pandas is getting _________ because their living areas are becoming farmlands.
The bus came and we_________.
Yi Zhongtian’s simple and interesting explanation of history has _________ lots of TV viewers.
Studying in a foreign country is a different _________ and you can learn a lot.
Qinghai-Tibet Railway(青藏铁路) was completed last year. It is the __________ railway that connects Tibet with the other parts of China.