她的合同规定，她每周工作固定的小时数。

In her contract, she works a ___set number of hours each week.

他每天早晨都雷打不动地遵循固定的作息。

He follows a ___set morning routine without fail.

图书馆有固定的晚上10点闭馆时间。

The library has a ___set closing time of 10 PM.