他已被签约在五场演出中表演。

He's been ___contracted to perform in five shows.

我们聘请了一位著名律师，如果我们的要求在年底前未得到满足，他准备将案件告上法庭。

We have ___contracted a famous lawyer who is ready to take the case to court if our demands are not met by the end of the year.

政府与一家建筑公司签订合同来建造新桥。

The government ___contracted a construction firm to build the new bridge.