题目内容
We often see Betty ____ the old man with his housework.
| A.help | B.to help | C.helped | D.helping |
A
解析试题分析:句意:我们经常看到贝蒂帮助老人做家务。See sb doing/do sth看见某人做某事,用do是表示看见动作全过程,用doing则表示看见动作正在进行,不一定看见全过程。所以选A。
考点:考查非谓语动词。
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