这座城市缺少绿地空间。

The city is ___be ___short ___of green space.

我们牛奶不够了；你能买一些吗？

We're ___be ___short ___of milk; could you buy some?

他因为缺现金而无法参加这次旅行。

He couldn't join the trip as he was ___be ___short ___of cash.