— Do you agree that lions and tigers the cat family?
— I have no idea.
A. belong
B. are belonged to
C. are belonging to
D. belong to
网友回答
A. belong
B. are belonged to
C. are belonging to
(答案→)D. belong to
解析：这题考查belong to的用法：这个词组是“属于’,不能用被动，和进行时，句意是：你同意狮子和老虎是猫科动物吗？--我不知道。选D。