题干

Tom sits       the classroom while John sits       the room.

A:in front of; at back of

B:in the front of; at the back of   

C:in front of; at the back of

上一题 下一题 0.0难度 选择题 更新时间:2019-09-14 11:10:58

答案(点此获取答案解析)

B