他坚持锻炼了三个月，但最近又开始偷懒了。

He kept exercising for three months, but recently started ___lapsing into laziness again.

他的会员资格因为没有续费而失效了。

His membership expired after ___lapsing due to non-payment.

在康复过程中，他开始好转，但又逐渐退回到依赖轮椅的状态。

During recovery, he was getting better but is now ___lapsing back into wheelchair dependence.