45. As there was nobody behind the ______, I came back without buying anything.
A、 wall
B、 counter
C、 picture
D、 computer
出自:大学英语

完成拼图验证

按住下方滑块,将拼图拖到缺口处后松开。

拼图背景,将小拼图拖到缺口处
向右拖动滑块