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

游客2023-11-13  22

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

选项 A、at ease
B、at random
C、at intervals
D、at large

答案 C

解析 此题考查作状语用的介词短语。C项at intervals意为“不时地”,介词和名词间可插入形容词,如:at long intervals偶尔;at short intervals频频; at regular intervals每隔一定的时间。A项at case意为“自在;不拘束”。B项at random意为“随意地;胡乱地”。D项at  large意为“自由地;详细地;整体地”。
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