题目内容：

根据句意和汉语提示写出单词，完成句子。每空一词。

1.I think         (语法) is the most difficult part in English study.

2.Columbus(哥伦布)        (发现) America Continent in 1492.

3.We never         (怀疑) that they can learn English well through their hard work .

4.Lily got full         (分数) in English test because of her hard work.

5.It’s time for the player to drink to his          (胜利).