I remember when I first started writing my homework with a pen, sometimes I couldn't write it with a pen, and then I tossed it around and made it everywhere. When I was very dissatisfied, my grandfather said to me, "Linlin, sometimes your pen can't write?" I nodded and grandpa went into the study. After a while, grandpa came out and said to me, "Come on, I'll tell you a little trick. If the pen says it doesn't drain, you can repeatedly inhale soapy water with the pen and then rinse it with clear water, so that the pen will drain more smoothly. " After listening to grandpa's words, I quickly picked up a pen and ran into the bathroom, and did as grandpa said. In a few minutes, it's done. I can't wait to pick up my pen and write my homework in my exercise book quickly. Sure enough, pens are always smooth.

Students, there are many tricks in life. Do you know any tricks?