A new study proves a walk every day is enough to keep people away from becoming fat.
- A.30-minute
- B.30 minute’s
- C.30-minutes
- D.30 minutes
答案
正确答案:A

本题考查了名词所有格的用法。这里缺少定语修饰walk,表示“步行30分钟”。30 minutes’或30-minute这两种形式都可以作定语修饰后面的walk。所以答案选A。

略
