I haven,t seen Miss Yang for a long time .don,t you know she ----- to help the poor areasin the west last year?本人认为填was sent,拿不准,

I haven,t seen Miss Yang for a long time .don,t you know she ----- to help the poor areasin the west last year?本人认为填was sent,拿不准,
I haven,t seen Miss Yang for a long time .don,t you know she ----- to help the poor areas
in the west last year?本人认为填was sent,拿不准,

I haven,t seen Miss Yang for a long time .don,t you know she ----- to help the poor areasin the west last year?本人认为填was sent,拿不准,
填was sent.过去时的被动语态

was sent, 主要根据句末 last year 判断应过去式，而且是被动语态