57. They ________ camp for the night near the river the day before yesterday.
A. pinched B. peaked C. pitched D. perched
出自:大学英语第二册

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