由于缺少玻璃,他们使用纸来遮盖窗子[  ],they used paper to cover the windows.(lack)

问题描述:

由于缺少玻璃,他们使用纸来遮盖窗子
[  ],they used paper to cover the windows.(lack)

[Because of lacking of glass],they used paper to cover the windows.(lack)

Because of the lack of glass