As we all know tigers and catsthe same family of beasts.A. belonged toB. are belonged toC.

问题补充：

As we all know，tigers and catsthe same family of beasts.

A. belonged to

B. are belonged to

C. belong to

D. are belonging to

答案：

A. belonged to

B. are belonged to

(答案→)C. belong to

D. are belonging to

解析：考查belong to用法。Belong 不及物动词属于，应归入的意思，常和介词to搭配使用，一般不用于被动语态。句意：众所周知，老虎和猫属于同一家庭的野兽。故选C。