urst(爆发,突然发作)---burst---burst, cast(撒,扔,抛)--- cast --- cast
become(变得,成为)---became---become, come(来,来到)---came---come,
run(奔跑,褪色)---ran---run, overcome---overcame---overcome
bend(使弯曲)---bent---bent, build(建筑,造)---built---built,
lend(借出)---lent---lent, send(打发,送,邮寄)---sent---sent
lose(失去,丢失)---lost---lost,
smell(嗅,闻到,发出气味)---smelledsmelt---smelledsmelt,
spell(拼写)---spelt/spelled---spelt/spelled,