—How much do you know about the 3D film technology?---A little ,Not until____the hot movie Avata____some about it.
Personal space means not only an imaginary space around the body, but _____ around all the senses.
On the other hand, the influence______ eating habits on people’s emotions was also neglected most of the time.
It was announced that only when the fire was under control_______to return to their homes.
Tea ceremony, though it is now most popular in Japan, is said_______ in ancient China.
My friend has returned from the UK. She ______ at Oxford for four years, during which we communicated with each other on the Internet.