1.The storm which (occur)....occured....at the end of January (destroy)......has destroyed.......several house.
2. I (speak)...have spoken...to her since she (move) moved to England.
3.By the time the rescue team (arrive) .arrived...., 50 people (injured)...have injured......in the fire.
4.If i earn enough money, i (buy) will buy a machine which can predict disasters
5.If we become more awaer of the environment, many diseaser can (prevent)....be prevented....