class|classes|classed|classing

许多传统产业雇佣了工人阶级。

Many traditional industries employed the working ___class.

他们渴望中产阶级的生活方式，并送孩子上大学。

They aspired to a middle ___class lifestyle and sent their children to university.

历史上，土地所有权集中在上层阶级手中。

Historically, land ownership was concentrated in the hands of the upper ___class.

这座塔被归类为历史纪念碑。

The tower is ___classed as a historic monument.

综合考虑，这一天可以被归类为成功。

All things considered, the Day could be ___classed as a success.

这种新物种被科学家归类为濒危物种。

The new species was ___classed as endangered by scientists.

社会流动性允许个人在不同阶级之间移动。

Social mobility allows individuals to move between ___classes.

生物学家们花了数小时将新发现的生物体归入不同的门。

The biologists spent hours ___classing the newly discovered organisms into different phyla.