The writer and professor, whom I often refer to at the meetings, ____ famous for those works. 
#86155
A
is
B
are
C
am
D
were
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No one except Jack and Tom  _____the answer.
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A
know
B
knows
C
isknowing
D
areknown
______ is to be awarded the highest award at this evening’s meeting. 
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A
Both the director and the writer
B
Both of the director and the writer
C
The director and the writer
D
The director and writer
The number of workers _______________2000.
#85848
A
has reached
B
have reached
C
is reached
D
has reached to