单项选择题

So many directors______, the board meeting had to be put off.

A．were absent
B．been absent
C．had been absent
D．being absent
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单项选择题
All the key words in the article are printed in______ type so as to attract readers' attention.
A．dark
B．dense
C．black
D．bold
单项选择题
The manager spoke highly of such______ as loyalty, courage and truthfulness shown by his employees.
A．virtue
B．features
C．properties
D．characteristics
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