22.In general, the old man is generous. But ____, he was mean to an old beggar. A.at once B.once aga

题目简介

22.In general, the old man is generous. But ____, he was mean to an old beggar. A.at once B.once aga

题目详情


22.In general, the old man is generous. But ____, he was mean to an old beggar.
A.at once B.once againC.for once D.once over
题型:单选题难度:偏易来源:不详

答案

C

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