My Ipod is not here. Where ______ I have put it?

--The room is so dirty.____ we clean it? ---Of course.

— It’s ten years since I met you last time. I ________ you at all.—I wouldn’t have, either, if someone ________ you by name.

He ______ the key, so we ______ into the office.

I__________ you somewhere before, but your name has escaped me_________.