I bought a dress for only 10 dollars in a sale;it was a real ________.
Alice was lucky enough and she was the only one of the girls in her school who __________ to France as an exchange student.
Mary is the only one of the teachers who __________ a little Chinese because she is one of my friends who __________ been to China.
Joan is one of the best writers who __________ published a lot of books.
It is the first time that I __________ the video of Gangnam Style.
I have heard a lot of good things about you __________ I came back from abroad.