根据短文理解，从A、B、C、D四个选项中选择最佳答案填空。

    Christmas is an important festival. All the people in Western countries 1 Christmas. And some people enjoy the hard work before that day 2 it's very interesting. Before Christmas we must get everything 3 for it. For example, on the 4 before that day, people often have dinner by the Christmas tree. We often eat cakes and drink something. And we 5 our presents for other family members on the floor under the tree. In my family my mother usually 6 a big Christmas cake for us. My old grandfather usually buys the Christmas 7. My father and I usually 8 it. We cover(覆盖) it with lights and put the 9 in the tree. Everyone shouldn't 10 his present until that day.