He ________ in America for 3 years when he was young, so he can speak fluent English.
From facts, scientists have ________ that more energy is being absorbed from the sun, throwing the earth's energy "out of balance".
Recently several severe traffic accidents have ________ the death of many innocent people which attracted great attention from the public.
The boy ________ fifty yuan in repairing the watch yesterday.
It was in the lab was set up last year ________ they finished the experiment. A. that; thatB. where; in which C. which; whereD, in which; that
He asked us about the ________ news in a ________ voice.