1,Electricity allows humans to have a better life .
电让人类拥有更好的生活
2,Only if you work hard can you have an opportunity to a brighter future.
只有好好学习才有机会享有更美好的未来
3 it is important for us to do our job as a student at present .
目前做好我们学生的本职很重要
1,Light bulbs were invented by edison.
2,lots of flowers are planted in parks when Spring comes.
3,children should be allowed to go out with friends during weekends.
4,knives are used to cut apples.
5,The bridge is made of stones .