Over the past decades, sea ice _____ in the Arctic as a result of global warming.
A. had decreased B. decreased C. has been decreasing D. is decreasing
After some time in the dark cave, our eyes slowly _____ the dark.
A. used to B. adapted to C. accustomed to D. helped to
Seldom out time to watch TV on Sunday.
A. I can squeeze B. can I squeeze C. squeeze I D. I squeeze
Steven Hawking’s conclusion about the Black Hole is a little , but it has been accepted by most of the world.
A. realistic B. abstract C. contemporary D. appropriate
_____ matters most in learning English is enough practice.
A. what B. why C. how D. Which
If I a quarrel with him yesterday, we together now.
A. hadn’t had; would stay B. haven’t had; would have stayed
C. didn’t have; would stay D. hadn’t had; would have stayed
