Verb Forms
got
Explanation: The sentence is describing a past action that happened after the men walked across the mountains.
think
Explanation: This sentence expresses the speaker's opinion or belief.
told
Explanation: This sentence describes something the speaker was told in the past.
Word Forms
risky
Explanation: The adjective "risky" is needed to describe the activities that can lead to injury.
Amazingly
Explanation: The adverb "amazingly" is needed to modify the verb "survived" and express the surprising nature of their survival.
bravery
Explanation: The noun "bravery" is needed to complete the phrase "takes bravery" and express the quality required for adventure.