单项选择题

Being engaged in the research work, Dr. Yang seldom goes anywhere______ his office.

A．in place of
B．except to
C．in addition to
D．instead of
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He doesn't dare to leave the house ______he should be recognized.
A．in case
B．if
C．provided
D．so that
单项选择题
The children______ many times not to get closed to the fire.
A．were being told
B．have been told
C．had been told
D．told
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