如果项目要成功，政府支持将是必不可少的。

Government support will be ___essential if the project is to succeed.

计算机是我们生活中不可或缺的一部分。

Computers are an ___essential part of our lives.

我们的价格保持竞争力是至关重要的。

It is ___essential that our prices remain competitive.