Tigers belonging to meat-eating animals,feed on meat.

参考译文：属于肉食动物的老虎以肉为食。 

B为正确答案

句子语法结构分析如下

主语：Tigers

修饰主语后置定语：belonging to meat-eating animals

谓语：feed on

宾语：meat

因为主语为复数，所以谓语动词也用复数，即动词原形。

A belonged to, fed on 

B belonging to, feed on 

C were belonged to,feed on 

D belonging to,feeding 

解答如下：

belongings to meet-eating animals为现在分词短语作后置定语，修饰/限定前面的名词，相当于一个定语从句作定语which belong to meat-eating animals。（belonging to为静态动词现在分词表示一般体含义。）

Tigers belongings to meat-eating animals,feed on meat. 

=Tigers which belong to meet-eating animals,feed on meat.