When you are　reading something in English, you may often meet with a new word. What's the best way   ①  (know)it?  You may   ②   in the English-Chinese  dictionary. It will tell you a lot about the word: the pronunciation, the Chinese meaning and how to use the word. But how can you know where the word is in thousands of English words? How to find it in the dictionary both quickly and correctly?   First, all the English words are arranged in the letter order. In the dictionary you can first see the words beginning with letter A, then B, C, D. . . That means, if there are two words both beginning with the same letter, you may look at the second letter, then the third, the fourth. . . . For example, “pardon” is before “plough”,“judge” is before “just”, etc.  ③Do you understand how we can look up a word in a dictionary?

The dictionary will be your good friend. ④我希望在你的英语学习中, 你会尽可能经常地使用它。

根据短文内容完成以下任务。