Question: the ski instructor course takes 10 days.
Answer: --> The ski instructor course takes 10 days.

Question: as mentioned, the centers are international in scope and they collaborate and publish widely with foreign partners.
Answer: --> As mentioned, the centers are international in scope and they collaborate and publish widely with foreign partners.

Question: american william leonard hunt, who was known by the name signor farini, immediately saw the potential and with great success marketed the girl as "the missing link": living proof of darwin's theory on the descent of man.
Answer:
--> American William Leonard Hunt, who was known by the name Signor Farini, immediately saw the potential and with great success marketed the girl as "The missing link": living proof of Darwin's theory on the descent of man.