【正文】
for ... 3b Imagine you are a business person. Write a description of your new invention. Try to sell the invention to the class. 1 Complete the passage with the correct forms of the words in the box. invent doubt mention website all of a sudden It is often difficult to decide on the inventor of certain is because sometimes a few people may ______ things which are nearly the same. It39。s hard to tell who came up with the idea first. Some inventions can also lead to other inventions some people _______ whether the inventor came up with the idea himself or herself. They think that the inventor used someone else’s idea to create his or her invention. That is why books or _______ usually ________ more than one inventor when giving information about inventions.