The manager of the factory told us that very little〔〕was made of the waste material in the past.A.cost B.value C.use D.matter

问题描述:

The manager of the factory told us that very little〔〕was made of the waste material in the past.A.cost B.value C.use D.matter

C
make use of sth.【利用】的被动式
use be made of .
sth be made use of.