—When did the terrible earthquake happen in Ya’an Sichuan?—It happened ________ 8:02 ________ the morning of April 20th,2013.
--__________must be working in the office, I think. --Sure, the light is still on.
—Why don’t those children go to school? They’re too young to work in the factory. --Maybe their parents can’t_______their education.
—How does Jack usually go to school? --He_____a bike, but now he_____there to keep healthy.
—Tom, please wash the fruit more times. --I see. People use chemicals______on their fields.
—Little Kate went to the concert_______it rained heavily yesterday.