№7:
1) If it snows, I will stay home.
2) If it rains, I will wear my raincoat.
3) If it is cold, I will shiver.
4) If it is hot, I will not forget to bring some water with me.
5) If it is foggy, I will not go outside.
№8:
1) comes, will
2) home, I'll
3) запятой нет
4) запятой нет
5) home, she
№9:
1) I am not sure if double-deckers are red in London.
2) I am sure that Scotland is in the north of England.
3) I am sure that Baikal is the deepest lake in Russia.
4) I am not sure if the weather is always sunny in London.