21.   Still, the memories linger.

22.   Summer is gone but the memories linger.

23.   That memory still lingers.

24.   The dispute was soon resolved, but sour memories lingered.

25.   The memories linger.

26.   The memories linger as she opens mail without him, but the job still invigorates her.

27.   The memories should linger for a while.

28.   The Soviets suffered a bitter defeat in Afghanistan, and the memory still lingers.

29.   Those memories linger.

30.   Those memories will linger.