Réponse:
. I have already.../I have never...
1-I never took part
in a talent show
2- I have already invented or built a machine,
for example with Lego bricks.
3- I have already sung in front of an audience,
for example for my family
at Christmas.
4- I have already won a competition,
or participate
in a contest.
5- I have already run more than 2 kilometers
without stopping.