阅读下面材料，在空白处按要求填入单词的正确形式，使短文完整、通顺。

    It's (Tony) birthday. He always has a party at home and he (have)a party now.  His mother always (make) a birthday cake. It is  (冠词) chocolate cake.  It is (he) favourite. All Tony's friends are at the party. Now they (give) him presents and he is opening them. They usually give him CDs or books. They usually eat healthy food (连词) they aren't eating healthy food (介词) the party! They eat candies and (drink) cola. Tony is (enjoy) his birthday party.