The boy is too young tohimself.A. look at B. look after C. look on

问题补充：

The boy is too young tohimself.

A. look at B. look after C. look on

答案：

解析：look at看;look after照顾,关心;look on 观看,旁观,看待.句意:这个男孩太小,而不能照顾自己.结合语境可知选B.