His mother is ill. He has to her at home.A. look atB. look afterC. look forD. look into

问题补充：

His mother is ill. He has to her at home.

A. look at

B. look after

C. look for

D. look into

答案：

解析：此题重点考查动词短语辨析，look at“看”，表动作；look after“照顾、照看”相当于take care of；look for“寻找”表示找的动作；look into“调查”,根据题意，他妈妈生病了，他必须在家照顾他妈妈，故选B