It ________be the postman at the door.It's only six o'clock.
— 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 .
The men got out and pushed the bus . But it ____ move , not one bit .