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

发布时间：2020-08-15 02:55:47


22.In general， the old man is generous. But     ， he was mean to an old beggar.
A. at once
B. once again
C. for once
D. once over

网友回答

A. at once
B. once again
(答案→)C. for once
D. once over
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