Mrs. Black lives on Second Avenue. New Year is coming. She wants to send   a card to her friend in Toronto, but she doesn't know where the post office is. She asks her neighbor   Mary, " Is there a post office near here? I want to send a card." "The post office is not near from here," answers Mary, "but you don't need to go to the post office to post the card. There is a _ in front of the supermarket. You can put your card into the mailbox" What does Mrs. Black want to do?
She wants to go to the post office. She wants to go to the supermarket. She wants to send a card to Mary. She wants to visit her friend.