我主动提出帮他们搬那些沉重的箱子。

I ___offered to help them move the heavy boxes.

我哥哥主动提出开车送我们去机场。

My brother ___offered to drive us to the airport.

她主动提出在我外出时照顾我的猫。

She ___offered to look after my cat while I was away.