今天，该到丁丁做值日生了。他扫完地后，就回家去了。
Today, it's time to go to Dingding to be on duty. When he had finished sweeping the floor, he went home.
走着，走着，丁丁发现打雷了。轰隆隆，轰隆隆，怪吓人的。呼呼呼，呼呼呼，风也刮起来了。
Walking, walking, Ding Ding found the thunder. Boom, boom, it's scary. Whoosh, whoosh, the wind is blowing.
丁丁一拍脑袋，说：“哎呀，我忘记关教室窗户了。”
Ding Ding clapped his head and said, "Oh, I forgot to close the classroom window."
说完，丁丁一转身，像小马一样跑回到学校。蹬蹬蹬，飞快地上了楼。咔咔咔，锁子打开了。进门后，丁丁小心翼翼地把窗户关了。
Then Ding Ding turned around and ran back to school like a pony. I stepped up the stairs quickly. Click, click, the lock is open. After entering the door, Ding Ding closed the window carefully.
门房的爷爷看见了，夸丁丁是个负责任的值日生。
The porter's grandfather saw that kwading Ding was a responsible student on duty.