U.S. President Barack Obama ______ a speech at a dialogue with Chinese youth at the Shanghai Science and Technology Museum during his four-day state visit to China, Nov. 16, 2009.

The visit of the police was not connected ____ the lost child

I can’t imagine living in a place _______ there is no seasons． It seems so strange．

It is reported that two big forest fires in the border area between France and Spain since Sunday _______ several people

ys as a journalist, you have to beimmediate in covering a news event and _____ in your account of the news storyI dare say it’s really a tough job