1.I will help him if he ask
2.if he asked me , i would help him
3.if he asked me earlyer, i would help him
4. if he have time, he will do this exisise
5.he would do exisise , if he had time
6.???
7.if rain stop , i will go for walk
8.i would go for walk,if rain stop
9.if yesterday rain do not stop,we woulg go for walk
10.if Billy Jin come home early,we will watch the film together
11.if Billy Jim came home early, we would watch the film together
12.if Billy Jim came home early ,we would watch this film together
Объяснение:
наверное правильно)
1. Acid rain was dicovered by a Scottish scientist in the 1850s, and since the 1960s a lot of research has been done about it. It is mainly caused by factory smog and car fumes. At every moment these chemicals are released into the air. There, they mix with water and are stored in clouds until it rains. Recently, many famous buildings and statues are being damaged by acid rain and in the future scientists predict that huge areas of forestland will be destroyed by acid rain. Acid rain can be reduced if we burn fewer fossil fuels, but we need to act now!
Объяснение:
