4 ACTIVATE Follow the steps in the writing guide.O WRITING GUIDEA TASKA friend from Britain is coming to stay with youfor a weekend. Write an email about your plansfor the visit.B THINK AND PLAN1 What are you doing on Saturday morning?2 Do your parents want to do something withyour friend? What?What are the nossibilities for Saturday​

1 one day in 1777, Joseph Montgolfier, sitting in front of the fire, noticed that one of his shirts had started to float upwards.
2 He did some experiments and came to the conclusion that smoke had the power to lift things up and carry them through the air.
3 The Montgolfier brothers quickly realised that it was heat and not smoke that had the power to lift things.
4 On 19th September 1783, they presented their first hot-air balloon, which was made from paper and cloth.
5 They burned some straw underneath it and the heat helped the balloon to float.
6 A sheep, a duck and a chicken were in the basket that hung below the balloon for the two-mile journey and they landed safe and sound.
7 Shortly afterwards, the brothers asked the king for permission to send men up in the balloon.
8 The king agreed, and the first flight consisting of human passengers took place in Paris on 21st November 1783, with great success.