quiet可数吗

I was looking forward to a quiet evening at home.

我盼着在家过个恬静的夜晚。

Business is usually quieter at this time of year.

每年这个时节，生意往往比较清淡。

I go to the library for a little peace and quiet.

我到图书馆去清静一下。

'Be quiet,' said the teacher.

“安静点！”老师说道。

Be quiet, I have something to say.

安静，我有话要说。