were是什麼時態4

All the statistical computations were performed by the new software system.

所有的統計計算均由新的軟件系統完成。

A number of measures were taken to alleviate the problem.

採取了一系列措施緩解這個問題。

No payments were made last week because of a computer error.

由於計算機出錯，上週未付任何款項。

Things were going fine until you showed up.

你一露面就把事情搞糟了。

The experiments were carried out under simulated examination conditions.

試驗是在模擬的.情況下進行的。