-Sir,may I borrow some new books?-Sorry,you can't________you haven't turn back those you borrowed one month ago.
The _________ nature of the job will be made clear when you start.
Because the scientists are always traveling towards the truth _________ arriving at them, they need to help one another to find the way.
_________ scientist like her won’t be simply satisfied with _________ little progress that has been made.
___________ from the top of the hill, the town looks like a diamond.
— Do you know Laura’s address? — _____________. As a matter of fact, I don’t know any Laura, either.