Срочно！3 4............

         3.
3) founded 
4) was
5) didn't have 
6) climbed 
7) runed 
8) searched 
9) tied 
10) broke out 
11) rushed
12) exploded 
13) sunk
14) happend 
15) existed  
         
        4.
He was studying when the lights went out
She was cooking wile we were watching tv 
They were playing football when the lights went out 
The phone rang when he was sitting on the table
Tom and i were walking in the forest when the lightning stroke.