关于Electricity的作文,用到must和must’t

must和mustn't我用大写标出来了.此作文为我原创作品,稍有改动.
Nowadays there is a heavy shortage of electricity in the world.
There are many reasons for lack of electricity. First of all, to make electricity needs plenty of natural sources, such as coal, water and wind. Unfortunately, there are fewer and fewer natural resources left because they are always limited but more and more people need it. Secondly, many of us haven't paid enough attention and even still waste much of it. What a shame!
So, we should take quick and informed action to solve this problem. Of all measures, the below are the most important: We MUST develop more ways of making electricity such as nuclear energy, and we MUSTN'T waste it any longer.!