1, it's a pity that you didn't go to see that film at the cinema last night
--> You should have gone to see that film at the cinema last night
2,it was very careless of you to let the door open last night
-->You shouldn't have been careless to let the door open last night
3,perhaps manh is repairing his bike now
-->Manh may be repairing his bike now
4,perhaps they have two big houses in the suburb
--> They may have 2 big houses in the suburb
5,you ought to have reminded me about the meeting yesterday
--> Why didn't you remind me about the meeting yesterday?