19.3 Complete the sentences. Use for or ago with these words. 1 Helen arrived in Ireland three days ago. 2 Helen has been in Ireland for three days. 3 Lynn and Mark have been married (20 years) 4 Lynn and Mark got married (20 years ago) 5 Dan arrived (an hour ago) 6 I bought these shoes (a few days) ago 7 Silvia has been learning English (six months) 8 Have you known Lisa ? (a long time)