改进的名词英文单词怎么写

例句：

In some schools, Christmas carols are being modified to exclude any reference to Christ.

在有些学校，圣诞颂歌正在被修改以去掉任何涉及基督的.内容。

The software we use has been modified for us.

我们使用的软件已按我们的需要作过修改。

Top supermarkets are to ban many genetically modified foods.

顶级的超市将禁止销售许多转基因的食品。