Choose the right options

1. It ... when we ... this evening.

2. When my aunt ... home, we ... lunch.

3. The students ... chess when Mike ... his parents.

4. Ann ... her arm while Bob ... his bike.

5. While children ... cartoons, we ... a voice.

6. Jack ... ill while he ... in the river.

7. He ... his housework when his parents ... out.

8. The cat ... a mouse while the dog ... some meat from the table.

9. When Susan ... her friends, they ... on the table .