When I was at school, I _____ up very late, reading storybooks.
| A．used to stay | B．was used to stay |
| C．used to staying | D．am used to staying |
From facts, scientists have ________ that more energy is being absorbed from the sun, throwing the earth's energy "out of balance".
| A．confirmed | B．concluded |
| C．concentrated | D．conflicted |
Recently several severe traffic accidents have ________ the death of many innocent people which attracted great attention from the public.
| A．stuck to | B．appealed to |
| C．referred to | D．led to |
The boy ________ fifty yuan in repairing the watch yesterday.
| A．cost | B．spent |
| C．paid | D．took |
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.
| A．surprising; surprising | B．surprised; surprised |
| C．surprising; surprised | D．surprised; surprising |