In each group, find the one word which does not fit in
with the others.
(Based upon meaning or construction)

1)  walked   rode   sailed   traveled   flew

2)  educate   explain   teach   instruct   train

3)  warm   tepid   cold   heat   freezing

4)  thirst   defrost   relax   hijack   student

5)  doodle   entreat   memorize   exchange   remorse