Unlike watching TV, reading is a highly active process (过程)________ it requires attention as well as memory and imagination.
A. until B. but C. unless D. for
-- Don't you think it necessary that he _______ to Miami but to New York?
-- I agree, but the problem is ________ he has refused to.
A. will not be sent; that B. not be sent; that
C. should not be sent; what D. should not send; what
The place _______ the bridge is supposed to be built should be ________ the cross-river traffic is the heaviest.
A. which; where B. at which; which
C. at which; where D. which; in which
-- The woman biologist stayed in Africa studying wild animals for 13 years before she returned.
-- Oh, dear! She _______ a lot of difficulties!
A. may go through B. might go through
C. ought to have gone through D. must have gone through
In our childhood, we were often _______ by Grandma to pay attention to our table manners.
A. demanded B. reminded C. allowed D. hoped
They _______ on the program for almost one week before I joined them, and now we________ on it as no good results have come out so far.
A. had been working; are still working B. had worked; were still working
C. have been working; have worked D. have worked; are still working
