( )The sigh says that no one is permitted _____the buildingafter dark.
·approach
·to approach
·approaching
·approaches
出自:佳木斯大学语言治疗学

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