A. was
B. had been
C. will be
D. have been
第1题
It is certain that men will never stop _____ new energy sources to power their growing industry.
A. finding
B. to find
C. having found
D. found
第2题
Since taxi fare in the city may run _____ twenty dollars, I suggest that you take a bus.
A. as high as
B. as expensive as
C. so high that
D. so expensive as
第3题
_____ with the corresponding period of last year, the output of chemical fibers in the first quarter rose by 15%.
A. Comparing
B. To compare
C. Compared
D. Compare
第4题
Vingo wrote his life again when he was sure the parole was coming _____.
A. up
B. through
C. off
D. out
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