My sister is only one year old..My mother musther at home.A. look atB. look forC. look aft

问题补充：

My sister is only one year old..My mother musther at home.

A. look at

B. look for

C. look after

D. look like

答案：

A. look at

B. look for

(答案→)C. look after

D. look like

解析：句意：我妹妹只有一岁。我妈妈必须在家照顾她。照顾、照料某人用“look after”；look at意为“看”；look for意为“寻找”；look like意为“看起来像”；故选C。