题目

----Sorry, Michelle is a little shy.    ----Never mind, I     be that way when I was    her age. A. would, at    B. used to, ×  C.would, ×  D. used to, at 答案：B青蛙的运动方式主要有①游泳   ②爬行  ③行走  ④跳跃A.①②③④B.①②④C.①③④D.①④