The clock will strike twelve in___time.A.twenty minutes' B.twenty-minute选什么

问题描述:

The clock will strike twelve in___time.A.twenty minutes' B.twenty-minute选什么
为什么

twenty-minute整体做一个形容词~如:a 7-year-old girl
in twenty minutes' time 20分钟时间
如 ten minutes' break 十分钟的课间休息.