Our planet have been suffering from lots of natural calamities lately. They happen everywhere and cause a lot of damage to the whole population. During the last several decades the amount of earthquakes has incseased badly. What awful consequences had the earthquake in Japan! An earthquake, like all other natural calamities has a negative effect on nature, destroys and distorts it. The world in which the humanl lives is renewing very slowly, that's why people should take care of nature, value it and apart from that he should protect the environment.
1. Where will they go if the weather is fine?
2. If you miss the 10:30 train, there is another at 10:35.
3. Will I see you before you start?
4. I* ll stay at home till she comes.
5. I won*t speak to him until he apologizes.
6. After he finishes school, he* ll enter the University.
7. Where will you go when you come to London?
8. I * ll not have dinner before my mother returns home.
9. Until the weather is good, we will not go skiing.
10.I think they will leave after they discuss this problem
