I ____(see)him,but he didn't see me

I ____(see)him,but he didn't see me I didn't see him,but i _____(hear)him ____(go)downstairs I didn't see him at the meeting yesterday afternoon.He ____ I didn't see him yesterday afternoon,He ------have attended you didn't see him and____did i I happy to see him,but I didn't have time didn't see him yesterday i didn't see 改错My friend didn't see me for many years when i met him last ---Why didn't Peter see me wave to him. 请问I didn't see him和I haven't see him的区别 Why didn’t you come to see me?--- I ______,but I was too bus