It is known to us that lions and tigers the cat family.A. are belonging toB. belonged to

问题补充：

It is known to us that lions and tigers the cat family.

A. are belonging to

B. belonged to

C. belong to

D. are belonged to

答案：

A. are belonging to

B. belonged to

(答案→)C. belong to

D. are belonged to

解析：考查固定结构。belong to无被动结构，无进行时态。句子应用一般现在时，所以选C。