Fill in was/wasn't/were/weren't 1.Helen got married when she ...... 21 years old. 2.I called you yesterday evening but

1. Helen got married when she was 21 years old. 2. I called you yesterday evening but you weren't at home. Where were you?. 3. My son wasn't at work last week because he was ill. He's better now. 4. The shops weren't open yesterday because it was a public holiday. 5. Were you at home at 9.30? — No, I wasn't. I was at work.