1.   It is very interesting to read about the ………………. traditions and  customs of different countries.

2.   Many people complain with the boy’s parents about his bad ……………

3.   In Vietnam, it is a ………………. to call the first name of someone  older than you without a title.

4.   Family gathering is a common ………………. on each special events in  many countries.

5.   You may believe it or not, but in Denmark cemeteries are common  places for people to ……………….

usual

behave

rude

occur

social