看看这个英语句子it cannot increase further without additional space

都可以,只是各种用法语感上稍有差别：
it cannot increase further without additional space which is rented,稍显繁杂,具有很强的强调效果.
it cannot increase further without additional space being rented,简洁,不失强调作用
it cannot increase further without additional space rented,简洁,没有强调效果.