求一篇 what must you — when you receive a present for your birthday?开头的完形填空要有答案的
问题描述：
求一篇 what must you — when you receive a present for your birthday?开头的完形填空要有答案的
答
What must you do when you receive a present1your birthday? You have to sit down and write a thank-you note. The words “Thank you” are2important. We have to use them very often. We say them w...