第27题: [单项选择]Tom's grandmother had to look ______ his little daughter at home as he took a business trip to another city. A. for B. after C. at D. out 参考答案: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