| 1 | He was thrilled about his latest invention. | |
| 2 | He showed everyone his new invention. | |
| 3 | He won the Nobel Prize for inventing a new type of solar cell. | |
| 4 | This invention makes communication more convenient, saving a lot of time and cost. | |
| 5 | He is a young scientist dedicated to inventing safer and more environmentally friendly cars. |