My father always warns me that there is no such thing as a free lunch because we can’t get _________ for nothing．

Studying Wendy’s menu, I found that many of the items are similar to _____ of McDonald’s.

—I apologize to you for my rudeness yesterday, Mary? —Never mind, and I think ______ of it.

Not having found __________，he had to go home with empty hands．

It’s          good advice that           of the twins wants to take it.