ГДЗ граматика Англійська мова 7 клас Мітчелл

Look at the prompts. Write sentences using the Past Simple, the Past Progressive and as soon as, while or when, as in the example. 

1. Robert was surfing the Net when his friend called. 2. There was a loud noise outside while I was cooking. 3. As soon as Lucy burned her hand, she put it under cold water. 4. We were waiting at the bus stop when we met an old colleague. 5. While Ian was running down the stairs, he fell. 6. Mina was exercising at the park when a ball hit her.