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。