Réponse :
a. The launch of the Artemis rocket was such a historic occasion.
b. Traveling the Oregon Trail was so tough for the pioneers.
c. Learning about the Apollo 11 mission was such a fascinating experience.
d. Getting to Mars seems like an impossible mission.
e. Mars is so far away: over 164,000,000 km!
f. The pioneers were such brave and adventurous people.