Question

【题目】—I saw Betty go to Grandpa Zhang’s home just now.

—Yes, she is often seen ________ the old man with his housework.

A.helpB.to helpC.helpsD.helped

Answer 1

【答案】B

【解析】

句意：——刚才我看到贝蒂去了张爷爷家。——是的，人们经常看到她帮助老人做家务。

考查动词不定式。see sb. do sth.改为被动后，省略的动词不定式符号to还得加上，即 be seen to do sth.，故选B。