busy一般过去式

过去式是busied，例如：

1、While we talked， Bill busied himself fixing lunch.我们谈话时，比尔正忙着做午饭。

2、She busied herself with the preparations for the party.她忙于准备晚会。

3、She busied herself getting towels ready.她忙着把毛巾准备好。