last for a long time 还是last a long time?

last for a long time 还是last a long time? she kept me waiting for a long time last night We walked for a long time at last night改错 I haven't seen him for a long time.The last time I _____ (se lt's a long time since i last see you还是lt was a long time si It's been a long time since I last saw a film.还是It's a long it's a long time since i last saw you It's a long time since i saw you last. ----It's a long time ( ) I saw you last. lt's a long time () l saw him last lt's a long time since we met last ---It’s a long time ______ I last saw you.