--Could you help me with some math problems?--Sure. That’s _______ I’m here.
He regards that book _____ one of the worst that he’s _____ read.
We’re so busy that no one in the office can _____ for any other work.
The boy said that the fish his mother cooked tasted ______.
14. He _____ a visit to the factory and was warmly _____ by the workers there.
The girl ______ on the ground _____ to me that had _____ the purse on the desk.