题目内容：
提示：爱丽丝的妈妈病了，爱丽丝想向老师格林先生请几天假。
Alice : Excuse me, Mr. Green. I′ d like to take a few days off.
Green : 51 ？
Alice: My mother is ill. I have to take care of her.
Green: Oh dear! I am sorry to hear that. 52 ？
Alice: No, thank you. My mother has caught a bad cold. She has a high fever and coughs day and night. The doctor says my mother has to be in hospital for a few days. I would like to
be with her.
Green : I understand. 53 ？
Alice: I hope to be back next Wednesday.
Green : That′ s all right. 54 .
Alice: Thank you, Mr. Green. That′ s very kind of you. I will write it immediately.
Green : 55 .
第（51）题答案
答案解析：