______ seeing the damage he had done, the child felt ashamed.A、ByB、OnC、AtD、Fo

游客2025-05-06  0

问题 ______ seeing the damage he had done, the child felt ashamed.

选项 A、By
B、On
C、At
D、For

答案 B

解析 “on + doing sth.”意为“就在某时或某场合(之后)”,“一……就……”。
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