III. Use the cues given to write correct sentences. 1. At present/ most/ our electricity/ come/ use/ coal, gas, oil or nuclear power. ........................................................................................................................ 2. Scientists/ try/ find/ other alternative sources/ energy. ....................................................................................................................................................... 3. energy / from / sun / be / clean/ cheap / safe /. ...................................................................................................................................................... giúp mình vs ạ mình cảm ơn nhiều