There are quite a few old books on the shelf,but __of them is useful.A.both B.all C.none D.any

问题描述:

There are quite a few old books on the shelf,but __of them is useful.A.both B.all C.none D.any

C.none

D

C

答案是C。
none of them is useful 没一本是有用的。

c

选C,but表转折,另外从后面的is可以看出只有none是对的