Odpowiedź:
1 Emily has been interested in engineering since she was four years old.
2 She has focused on products that help people since she left school.
3 She entered a design competition in 2006.
4 She tested her fridge design in Africa. ( tu ma być gdzie a nie kiedy, sorry za pomyłkę)
5 People have used the the fridge for over ten years.
6 Since she left university she has spoken at conferences and given lectures.