21. What do the five Olympic rings s_________ for?

20. It was difficult to save the palaces and buildings without destroying their old b__________.

19. Some ancient sites have already been d___________ by tourists and villagers are worried that part of their history will be lost.

18.You may also i__________ a short message in any language in the box.

17. St Petersburg was almost in r________ fires burned everywhere.

16.　 B_____________,table manners are only important at formal dinner parties.

15.　 Some people pray before they start eating, and other people may keep s_________ for a moment.

14.　 Minzhi wants to go to town, but she can’t a______ to buy a bus ticket.

13.　 Steven Spielberg said that he o_______much of his success and happiness to his wife and children.

12.　 In 1959 Spielberg won a p______ for a short film which he made when he was thirteen years old.