――Don’t forget to return the book in two weeks.――_____.Don’t worry about it.
My parents used _____ they had to get a new car for my brother.
The question came up at the meeting _____ we had not enough money to do the research.
Is this hotel _____ you said we were to stay in your letter?
A modern university has been set up in ______ used to be.
Can you imagine that a smart man like him_____ make such a stupid mistake?