Drill the English verbs that refuse to follow the rules — go/went/gone, swim/swam/swum — in 8-question rounds, with a full reference table and your personal missed list. All local.

Why they matter: irregular verbs are the most common verbs in English — “go”, “see”, “have”, “be”. Mixing up “I have went” or “she seen” is the classic ESL giveaway. The past participle is the form after have, has or had.