The mobile phone has influenced people’s life a lot since it __________.

Oh, Mrs. Liu, your necklace looks nice. Is it new? — No, I ____ it for two years.

The price of the sweaters____ ＄20.

Do you know when we can go back home? —Sorry, I don’t. Because of the heavy snow storm, highways have been blocked and flights have been __________.

Lisa _______ to the art club every Friday afternoon with her friends.