3.   In the UK, there are lots of customs for table manners. For example, we                        use a knife and fork at dinner.

      A. have to                   B. are having               C. has to                      D. having to

4.   In Viet Nam, you                                                                                                               use only the first name to address people older than you.

      A. should                    B. must                        C. shouldn’t                D. have to

5.   At the Mid-Autumn Festival, kids can sing, dance, and enjoy moon-cakes.                   , every child likes it very much.

      A. However                B. Moreover                C. Because                  D. Therefore

6.   In 2010, Ha Noi                                                                                                                 its 1000th anniversary.

      A. celebrated               B. commemorated       C. worshipped             D. remembered