她减肥坚持了三个月，但最近又恢复了吃垃圾食品的习惯。

She stuck to her diet for three months, but recently ___backslid into eating junk food again.

戒酒一个月后，他又故态复萌开始酗酒。

After a month of sobriety, he started ___backsliding into heavy drinking again.