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
We often advise him not to drink more wine______ is good for his health.
A．as
B．than
C．that
D．but
单项选择题
The survey found that Hungary ______as the most environment-conscious country of East Europe.
A．broke out
B．held out
C．ran out
D．stood out
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