Maria has to baby-sit. That’s______ she can't come with us.
---- You haven’t got the textbook for my chemistry course yet. ---- I know, and we _____ to get it for the last 5 weeks.
---- Hey. Look where you are going! ---- Oh, I’m terribly sorry ____.
The chairman’s speech ______ the radio when I turned it on.
The bridge, which _________ 1688, needs repairing.
He has changed a lot. He _________ not what he _________.