问题
Do you know that there are many different _______animals in the zoo—Yes, I do. And I also know that some of them are ________scaring.
A:kinds of; kind of
B:kinds of; kinds of
C:kind of; kinds of
D:kind of; kind of;
B:kinds of; kinds of
C:kind of; kinds of
D:kind of; kind of;
正确答案是：
