How to save frequent flyer miles about to expire<br>Shop through an airline portal. Almost every airline has online malls or portals where you can shop. You'll earn extra miles on your purchases, and the clock will " reset, " so you won't lose any miles because of inactivity.
frequent flyer miles were introduced in 1998
( z1 introduce :ARG1 ( z2 mile :mod ( z3 fly :ARG1-of ( z4 frequent ) ) ) :time ( z5 date-entity :year 1998 ) )