| That's Unbelievable!

1 | Look, listen and say. Pay attention to the use of the words. |

artificial made by people, often as a copy of something natural The world's biggest artificial waterfall is inside a shopping mall! |  | to assume to think or accept that something is true but without having proof of it She assumed the talking parrot understood her, but it was only repeating words. |  | to purchase to buy something They purchased a small house, but later, they learned that a famous writer once lived there.

race a competition to see who is the fastest, like running or driving The car race was very dangerous because the drivers were speeding high. |  | robbery the act of stealing from a person or place The police are looking for the man who committed a robbery at the bank. |  | to arrest when the police take someone away because they believe the person has done something illegal The police found the criminal and arrested him.

| guilty If you feel guilty, you feel that you have done something wrong. The dog had a guilty face after chewing my shoes. |  | luxurious very comfortable and expensive They stayed in a luxurious hotel under the ocean—what an experience! |