We were just talking about her when, at that ________ moment, she walked in.
Soon after the mud-rock flow hit Zhouqu, Gansu Province, many soldiers came to the ______ as many people were trapped underground.
During the construction of the Qinghai-Tibet Railway, 33 migration overpasses have been made_______for herds of Tibetan antelopes to go through their breeding grounds.
We don’t know who ____ for the murder, but the policemen will tell us the truth soon.
Mrs. Black doesn’t believe that her son is able to design a digital camera, ______?
Now that their parents are dead, the poor boy doesn’t know ________ the money they left.