.—Steve come back because the window is open. —Yes.but he _______left it open last night.
—Ken, why do you look so tired? —I _____ myself _____ the climate since I came here.
Traditional folk arts of Tianjin like paper cutting ______ at the culture show of the 2010 Shanghai World Expo.
China’s oil price _____ very sharp increase during the year 2010 and it is continuing to rise further in 2011.
When asked why he went there, he said he was sent there _____for a space flight.
— How is your son getting along with his work in England? —Well. He’s ___ very easily to the new environments.