–Take away your balls they the whole room.-Ok Mum.A. take up B. take off C. use up

问题补充：

–Take away your balls, they the whole room.

-Ok, Mum.

A. take up B. take off C. use up

答案：

解析：take up占据，开始从事；take off起飞，脱下；use up用完，耗尽；句意：拿走你的球，他们占据了整个房间。——好吧，妈妈。结合语境可知选A。