They put off the meeting because of the rain 变被动语态
问题描述：
They put off the meeting because of the rain 变被动语态
还有
He calls maths the language of science
She often takes trhe magazines out of the library
We make this kind of watch in shanghai.
变被动语态
答
The meeting was put off by them because of the rainthe maths was called him the language of sciencethe magazines was often taked out of the library by herthis kind of watch is made by us in shanghai