题目内容
—I wonder _________ Mary has kept her figure after all these years.
—By working out every day.
A. where B. how
C. why D. If
练习册系列答案
相关题目
题目内容
—I wonder _________ Mary has kept her figure after all these years.
—By working out every day.
A. where B. how
C. why D. If