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