许多活动是免费的，所以预算有限的家庭可以参与。

Many events are free, so families on ___restricted budgets can participate.

就个人而言，我不喜欢图书馆的受限开放时间。

Personally, I dislike the ___restricted hours of the library.

机密文件的访问权限仅限于高级经理。

Access to the confidential files is ___restricted to senior managers only.