1) begin-began, tell-told, think-thought, translate-translated, draw-drew, speak-spoke, see-saw, teach-taught, become-became, stand-stood, answer-answered, learn-learned, read-red.
2) stand up(здесь [э], ост. - [а]), write(здесь [a], ост. - [и]), group (здесь [у], ост. - [ау]) Не серчай, если надо англ. звуки - я дал русские эквиваленты!