练习本、铅笔、尺子是学习用品。
Exercise books, pencils, rulers are school things.
盒子里有五支彩笔，一把尺子。
There are five markers and one ruler in the box.
这是我的.削刀，铅笔和尺子。
This is my sharpener, pencil, and ruler.
这些是尺子，那些是双肩包。
These are rulers and those are backpacks.
打扰一下，这是你的尺子吗？
Excuse me, is this your ruler?