—Mum, I’ve got an "A" in the English examination today.—Great! And you are sure to win a second time because this is a good_____.

Dogs have a very good ______ of smell and are often used to search for survivors in the earthquake.　　　　　　　　　　　　　　　　　　　　　　　　　

 One of the world’s first ____ was in Egypt.

— What’s this?                           — It is          .

Last week, they held the charity show to raise money for the ______ of the earthquake.