to rebuild - rebuilt
b) to miss-missed
to understand-understood
to appear-appeared
to stand -stood
to found-founded
to take-took
to move-moved
to get —got
to change-changed
to become-became
to listen - listened
to begin-began
to enjoy-enjoyed
to visit -visited
to buy-bought
to water-watered
to come-came
to place-placed
to grow-grew
to defend-defended
to hear -hear
to travel -traveled
to go-went