Betty is often seen ____ the old man with his housework. Wap版

试题详情及答案解析

Betty is often seen ____ the old man with his housework.

A．help	B．to help
C．helped	D．helps

答案：B

试题分析：句意：Betty经常被看到帮助那个老人做家务。see sb do sth,see后是加了一个省略了to的动词不定式。当用于被动结构是省略了的to还得加上，故选B。
考点：考查动词不定式的用法。