It is ______(luck)of you to have such a nice flat.

问题描述:

It is ______(luck)of you to have such a nice flat.

填: lucky

It is +adj.+ of sb. to do sth.是一个固定句型. 意为: 某人做某事真.

因此这儿填luck的形容词lucky.

句意: 你真是幸运,有这么好的一套公寓.