单词释义：根据英语解释写出相对应的单词。
1. a lift in a building _______
2. a word for petrol in American English _______
3. as a matter of fact; in fact _______
4. a set of rooms for living in, usually on one floor of a large building _______
5. all the words that a person knows _______
6. happening often _______
7. accept that something is true or important _______
8. not suddenly _______
9. a way of saying words that shows what place someone comes from _______
10. a big piece or an area of buildings in a town or a city with streets on all four sides _______
