I’m a writer and ___________ language is the tool of __________ trade.
15.You may ________ the textbook if you don’t know the answer to the question.
14.Jim insisted that the book Mr. Black referred to ________.
13.Being a good listener is a kind of quality and that’s ________ it takes to keep friendship.
12.I gave all the newspapers to them and spared ______, though I didn’t have _____ in my flat.
11.I’d rather you did some housework when you are free, but you ________