1)Work-worked-worked
2)Put-put-put
3)fly-flew-flown
4)teach-taught-taught
5) write-wrote-written
6)grow-grew-grown
7)marry-married-married
8) speak-spoke-spoken
9)stop-stopped-stopped
10)enjoy-enjoyed-enjoyed
11)travel-travelled-travelled
12)eat-ate-eaten
13)sing-sang-sung
14)ride-rode-ridden