15. She ____________her former position in that joint venture (合资企业) company after recovery from her illness.
A. consumed
B. assumed
C. resumed
D. released
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16. It is reported that two cars____________into each other this morning on the highway, killing both the drivers and two passengers.
A. pressed
B. destroyed
C. crossed
D. crashed
There is hardly an environment on earth____________ man has not adapted successfully.
A. to which
B. wherever
C. so that
D. as to
19. There is no point ____________the piano unless you practise every day.
A. to learn to play
B. in leaning to play
C. by learning to play
D. having learned to play
We didn't go shopping yesterday because it ____________ all day.
A. had rained
B. would rain
C. was raining
D. has been raining