英语语法题,求改正
Avril （started) singing songs when she (was) 2 years old .Her family (moved) to Napanee when she (was) 5 years old. while she (was attending) school,her teachers sometimes (kicked her out) of class for misbehaving . Before Avril (became) a teenager, her father (bought) her some instruments.While she (was living) with her family, she (performed) at country fairs.
麻烦大神们帮我看一下括号里的形式都对不对.不对能不能告诉我原因?