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. 

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. 

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

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