The workers make ___paper from___wood

问题描述:

The workers make ___paper from___wood
A a a
B the the
C the a
D / /
the +单数n表示一类事物呀!

D
表示类指时如果是可数名词可以用THE +单数或A+单数或者用名词的复数(前面不用冠词)例如THE HORSE /A HORSE IS A USEFUL ANIMAL.或HORSES ARE USEFUL ANIMALS.都对.
如果是不可数名词,表示类指用零冠词+名词.例如WATER IS IMPORTANT.
THE PAPER是特指了