be动词后加什么词?

The space available is not adequate for our needs.

现有的空间不能满足我们的需要。

The gene is activated by a specific protein.

这种基因由一种特异性蛋白激活。

The country's economic system is pure Alice in Wonderland.

这个国家的经济制度实属匪夷所思。

We were amazed to find that no one was hurt.

我们很惊异地发现竟没有人受伤。

The course is 1 year FT, 2 years PT.

该课程全日制学习一年，非全日制学习两年。