is和are后面加什么名詞怎么用

　　This is one of the most commonly used methods.

　　這是最常采用的方法之一。

　　Medical care is still free at the point of use.

　　醫療保健在實際提供點仍然是免費的。

　　In our company, quality is high on the agenda.

　　我們公司高度重視質量。

　　There are still a few residual problems with the computer program.

　　電腦程序還有一些殘留問題。

　　No new SARS cases have been reported in the region.

　　該區沒有新增非典型肺炎病例。