______ 2010 Shanghai World Expo is a perfect opportunity to get ______ panoramic (全景的) view of the whole world without traveling thousands of miles.
Many visitors will have to wait for another two hours ______ the heave rain.
I ______ for Beijing in a few days. Do you know when the earliest plane ______?
The computer centre, ____ last year , is very popular among the students in this school.
When the spaceship was , I could really feel the high gravity.
He still remembers the days ______ he spent with your family.