According to the passage, our continual exposure to bad news without perspective is obviously________.

It was not until the end of prehistoric times that the first wheeled vehicles appearing. 

Mark the letter A, B, C, or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges. 

- Michel: "I failed my driving test again!" - Nick: “___________” 

- Anna: “Would you like a glass of beer, Emma?” - Emma: “_________” 

Some people often say that using cars is not as convenient than using motorbikes. 

Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions. 

They asked me what did happen last night, but I was unable to tell them. 

Which of the following is NOT true, according to the passage? 

Corn, domesticated by the American Indians, was brought to Europe by Columbus.