----What do you think of the songs?--As a matter of fact of them sounds beautiful .A.

问题补充：

----What do you think of the songs?

----As a matter of fact ,of them sounds beautiful .

A. no one

B. not all

C. not every one

D. not everyone

答案：

A. no one

B. not all

(答案→)C. not every one

D. not everyone

解析：every one of them ，但everyone 后不加 of。