I have a pencil box. It's blue. There are lots of things in it. I have a pen. It's red and long. I like it. I have three pencils. They are short. I have a ruler. It's big. I have an eraser. It's small.

“开辟荆榛，千秋功业；驱逐荷虏，一代英雄”这副对联所说的民族英雄是（  ）

某同学近年来皮肤干燥，夜晚看东西眼涩，他应该补充（   ）

— Let's go dancing tonight!

— Sorry, I ______.I have to go to a meeting.