Cover of the textbook Wider World 1 - Student's Book

The key answer of exercise 3

The key to exercise solutions in chapter CLIL 5 for the textbook Wider World 1 - Student's Book with authors Bob Hastings and Stuart McKinlay from Pearson Education

Question

Read the article again. Answer the questions.

Answer

  1. a sheep, a duck and a chicken
  2. 21 November 1783
  3. because hot air is lighter and less dense than cold air
  4. to carry passengers / because wicker is strong and light
  5. The pilot opens the valve at the top of the balloon. Some hot air leaves the balloon and it goes down.