1.

adj =

deadly ; lucky ; violent ; majestic ; dangerous ; catastrophic ; trapped ; giant ; massive ; witness ; heart-stopping ;safe ; incredible ; harrowing ; horrible

nouns =

a wave ; a carnage ; an earthquake; a climber ; a disaster ; a concussion ; ice ; destruction ; a victim ; a rock ; an avalanche

verbs =

to kill ; to speed ; to escape ; to hit ; to suffer ; to wipe out ; to struggle

2.

positive -> lucky ; majestic ; safe ; incredible

negative -> deadly ; violent ; dangerous ; catastrophic ; heart-stopping ; harrowing/ horrible

That can be positive, but also negative depending on the case. -> giant ; Massive -> witness

3.

quel texte ?

4.

a) On Mount Everest, the climbers deadly hit an avalanche

b) The violent avalanche, wiped out the base camp

c) Michael Churton was witness of the harrowing disaster

d) Some lucky survivors escaped the carnage

e) Michal Churton suffered from a broken nose

voilà voilà j'espère que cela t'as aidé :)