Tnis is a demanding task—but I see it as the real challenge we need to________.
A. face
B. solve
C. reply
D. detect
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The older I get,the more I value friends, yet the________time I have in maintaining old friendship.
A. few
B. fewer
C. little
D. less
In________of speed,safety and price, the hi-railway system is perhaps the world ’smodel railway.
A. terms
B. case
C. need
D. search
Never before________seen any lady who can play tennis as wellas Maria
A. had he
B. he had
C. has he
D. he has
Scientists estimatethatabout 530, 000 objects, too small to detect with radar, ________
A. being circled
B. are circling
C. are to be circling
D. are being circled