问题补充:
There are many tall trees our classroom.
A. in the front
B. in front
C. in front of
D. in the front of
答案:
A. in the front
B. in front
(答案→)C. in front of
D. in the front of
解析:本题的含义是在教室前面有许多的高大的树木,树应该在教室外面的前面,表示在外部前面通常用in front of,内部前面用in the front of,后面没有名词用A或B,故选C。