—John,when shall we meet again,Thursday or Friday?— .I'll be off to London then.
— You ought to have called her yesterday . — Yes , I know I ____ .
— Would you please go to the cinema with me ? — Yes , I ____ .
I don''t think it any use taking with him , you ____ as well leave him alone .
Why ____ you keep troubling your mother with such question while he is busy .
I''m surprised that he ____ to help me when I needed his help .