. My grandparents used..........to light....................their house with oil lamps.

 - I wonder how the farmers used..............to transport .........................their crops home in the past.

-They used buffalo-drawn carts.

 . We are making a great effort.......preserve...............................our valuable customs for the future.

 . Children love to.................. act out...................the stories as they tell them.

  Today teenagers have.......changed.......................a lot in comparison with teens in the past, especially in the way they spend their free time.

 . Women in the past did not have to.........worry................too much about their weight, diets, or obesity.

 . Customs and traditions are..............used to be..................from genaration to generation.

 . ................Communicating..............by instant messaging has become an essential feature of teens' social life.