Most verbs in each line are either regular or irregular. In each line, choose a verb that is different from the other three and write its Past Simple form.

Write one word in each gap.

To buy — to sell — to walk — to go. [ ]

To eat — to study — to drink — to sing. [ ]

To teach — to play — to jump — to appear. [ ]

To write — to read — to explain — to see. [ ]