问题
Is there a classroom building ____ the school–Yes, and there are some tall trees ____ the classroom building.
A:in front of ; in front of
B:in the front of ; in front of
C:in the front of ; in the front of
D:in front of ; in the front of;
B:in the front of ; in front of
C:in the front of ; in the front of
D:in front of ; in the front of;
正确答案是：
