There is a big tree the classroom.A. in front ofB. at the frontC. in the front ofD. in fr

问题补充：

There is a big tree the classroom.

A. in front of

B. at the front

C. in the front of

D. in front

答案：

(答案→)A. in front of

B. at the front

C. in the front of

D. in front

解析：

试题分析: 此题重点考查in the front of和in front of的区别。两者都表示在…前面，前者表示在内部，后者表示在外部，此句的含义是在教室的前面有棵大树，大树肯定在教室的外面，故选A。