单项选择题

The meeting was so prolonged and exhausting that ______ the speakers stopped for refreshments.

A．at ease
B．at random
C．at intervals
D．at large
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单项选择题
The men on board the ship pulled in the driver ______ they feared Was seriously injured.
A．whom
B．for whom
C．to whom
D．who
单项选择题
Some people ______ avoid questions of right and wrong or remain neutral about them.
A．violently
B．enthusiastically
C．sincerely
D．deliberately
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