раскройте скобки в правильном медли:1.What__(happen) if they hadn039;t come to the

Раскройте скобки в правильном времени:
1.What__(happen) if they hadn't come to the party.
2.If you__(heat) water to 100 degrees, it__(begin) to boil.
3.If it__(stop) raining, we could go out.
4.If Nigel__(not wear) a life jacket, he would have drowned.
5.If you wore some warmer clothes, you__(not be) cold