waswere加动词过去分词是什么时态

　　For a long time his death was concealed from her.

　　他的死瞒了很长时间都没告诉她。

　　She was not only intelligent but also very musical.

　　她不仅聪明，而且极具音乐天分。

　　A number of measures were taken to alleviate the problem.

　　采取了一系列措施缓解这个问题。

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

　　由于计算机出错，上周未付任何款项。

　　We were told to speak to no one.

　　要求我们不要和任何人说话。