When I met him the other day,it was the first time we __________ each other since we were at school.
He ____ have the ticket if I buy it .
This car looks like mine , yet it isn''t . Whose ____ .
The work ____ be finished in such a short time .
— You ought to have called her yesterday . — Yes , I know I ____ .
Why ____ you keep troubling your mother with such question while he is busy .