根据短文内容和首字母提示，填写所缺单词。
       The development of the English language took a giant step in 1607. Three small British ships c____  the Atlantic Ocean. They began to call areas of their new land by words borrowed from the native people. For example, many of the great r____ in the United States are taken from American Indian words. The Mississippi, the Tennessee, the Missouri are examples. This borrowing or adding of foreign words to English was a w____ of expanding（扩大）the language. The names of three days of the week are good examples of this. The people from Northern Europe honored three gods with a special day each week. The gods were Odin, Thor and Freya. Odin's-day became Wednesday in English, Thor's-day became T____  and Freya's-day became Friday.
     Experts cannot explain many English words. For h____  of years, a dog was called a “hound.” The word is still u____  but not as commonly as the word “dog.” English speakers just started using it. Other words whose origins are unknown i____ “fun,” “bad,” and “big.”
    English speakers also continue to invent n____  words by linking old words together. A good example is the words “motor” and “hotel.” Many years ago s____  linked them together into the word “motel.” A motel is a small hotel near a road where people travelling in cars can stay for the night.
    Other words come from the f____  letters of names of groups or devices. For example, the North Atlantic Treaty Organization is usually called NATO.

下列过程与盐类水解无关的是

清明节快到了，家在外地的王伟必须随父母回老家祭祖，因此要请假三天。下面是王伟写给他班主任王老师的请假条，请指出其中不恰当的地方并修改。

请假条

    清明节是我国乃至世界的传统节日，是祭祖和扫墓的日子。为继承传统，祭祀先人，令尊决定带家人回乡下老家扫墓。特向您请假，恳请老师批准。

请假人：王伟

2016年4月2日