— I just don’t think zoo is a good place for animals. They are not free in the zoo.— . But

问题补充：

— I just don’t think zoo is a good place for animals. They are not free in the zoo.

— . But don’t you think the zoo looks after animals well?

A. I don’t agree

B. I don’t think so

C. You must be joking

D. Maybe you’re right

答案：

A. I don’t agree

B. I don’t think so

C. You must be joking

(答案→)D. Maybe you’re right

解析：句意：---我只是认为动物园对于动物们来说是一个不好的地方，他们在动物园里不自由。-----也许你是正确的，但是你不认为动物园能照顾好他们吗？ But 表示转折说明前面是肯定对方的观点。故选D.