Thousands of protesters _______ major roads in the central business area of the city for weeks, leading to much inconvenience for many Hong Kong citizens.
| A．knocked off | B．blocked off |
| C．knocked out | D．blocked out |
Traditional folk arts of Tianjin like paper cutting ______ at the culture show of the 2010 Shanghai World Expo.
| A．are exhibiting | B．is exhibiting | C．are being exhibited | D．is being exhibited |
China’s oil price _____ very sharp increase during the year 2010 and it is continuing to rise further in 2011.
| A．observed | B．witnessed | C．proved | D．supplied |
When asked why he went there, he said he was sent there _____for a space flight.
| A．training | B．being trained | C．to have trained | D．to be trained |
— How is your son getting along with his work in England?
—Well. He’s ___ very easily to the new environments.
| A．adopted | B．adapted | C．adjusted | D．accustomed |
She is said _____in the United States for four years before she came back to work in our company.
| A．to study | B．to be studying |
| C．to have studied | D．studying |