这家软件公司被签约（承包）为政府开发一套新的安全系统。

The software company was ___contracted to develop a new security system for the government.

我们应该聘请一家信誉良好的会计师事务所来审计我们的年度财务报表。

We should ___contract a reputable accounting firm to audit our annual financial statements.

根据商定的条款，他们将与我们签订为期五年的独家零部件供应合同。

Under the terms agreed, they will ___contract with us for the exclusive supply of components for the next five years.