单选题 Tom's grandmother had to look ______ his little daughter at home as he took a business trip to another city．
【正确答案】 B
【答案解析】固定搭配题。look for“寻找”；look after“照料(固定搭配)”；look at“看”；look out“当心”。根据句意，B为正确答案。句意：当汤姆出差去另一个城市时，他的祖母不得不照看他的小女儿。