Computer is _____ challenging course of study that requires _____thorough understanding of mathematics and science.
A. the; a B. a; a C. /; / D. a; the
B
Thanks to the application of new farming methods, output is now ________ it was before the year 2000.
A. more than six times what B. more than six times of
C. larger six times than D. six times of that
A
---It seems to be colder outside today.
---Yes, the temperature _______to minus 2 here in Rugao and it is likely to get even colder next few days.
A. has fallen B. falls C. has been falling D. fell
A
--E-shopping, when properly ________, can save us a lot of energy.
--Yes. Previous to this, we had to search shop after shop, only _______ tired or disappointed.
A. being done; being B. doing; being C. doing; to be D. done; to be
D
Young people can accomplish what they want through such simple acts as keeping themselves ________ and approaching everything with total commitment.
A. focusing B. focused C. having focused D. to focus
B
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