If I were an inventor, I would invent a voice-activated pen. If you want to write an article, you can read it sentence by sentence. This pen will help you write it down, with neat words and never be altered.

If I were an inventor, I must invent instruments that can detect earthquakes, and don't let so many people leave this beautiful world. On May 12, 2008, a major earthquake struck Wenchuan, killing hundreds of thousands of people. However, scientists are greater than scientists and inventors. They have not created instruments that can tell that an earthquake is coming. If I were an inventor, I would certainly invent an instrument that can detect earthquakes.