The teacher is standing__the class an giving his lessons.A:in the front of B:at the front ofC:in front of D:at the front

问题描述:

The teacher is standing__the class an giving his lessons.A:in the front of B:at the front of
C:in front of D:at the front

选A
因为老师是在教室内部的前面,所以选A
而D是不完整的 是错的
C是指在外部的前面 不符合实际 所以不对
B不对 好像介词不是at