他的不道德行为震惊了所有人。

His ___immoral behavior shocked everyone.

在20世纪20年代早期，探戈被认为是一种不道德的音乐类型。

In the early 1920s, tango was considered an ___immoral type of music.

利用脆弱的人是不道德的。

It is ___immoral to take advantage of vulnerable people.