1)Steve ...English since he was five old. a) learns b) has been learning c) learned d) is learning2)I suddenly remembered

1) Steve has been learning English since he was five old (Present Perfect Continuous).Стив учит английский с тех пор, как ему исполнилось пять лет.2) I suddenly remembered that had forgotten my documents (Past Perfect).Внезапно я вспомнил(а), что забыл(а) свои документы.