问题
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
答案
D
“名词＋doing……”构成独立主格结构，表示原因。
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So many directors ________, the board meeting had to be put off.
A．were absent
B．been absent
C．had been absent
D．being absent
D
“名词＋doing……”构成独立主格结构，表示原因。