_______seemed strange to us was that he came back with nothing that day.(2007年第14题 专升本)
A. It
B. That
C. What
D. Which
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______ a diary is a good way to improve your English.(2006年第13题 专升本)
A. Having
B. Keeping
C. Taking
D. Writing
The singer and dancer______________ going to give us a performance.
A. is
B. are
C. was
D. were
More than one stuedent______________ to redo the homework.
A. require
B. requires
C. are required
D. isrequired
The police __________ searching for a thief.
A. is
B. are
C. was
D. do
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