1. The problem is to improve sentences by replacing bold phrases with appropriate words from a given word list. 2. The word list includes: brawl, casual, constant, excel, exhaust, hardy, mediocre, monotonous, originate, punctuate, ravenous, realistic, soothe, stamped, veteran. 3. Sentence 1: "He doesn’t seem to be very aware of how things really are when he talks about his future plans." - Replace "aware of how things really are" with "realistic". 4. Sentence 2: "The speech was interrupted a number of times by bursts of applause from the audience." - Replace "interrupted a number of times" with "punctuated". 5. Sentence 3: "To spend winters in Alaska you need to be tough enough to withstand difficult conditions." - Replace "tough enough to withstand difficult conditions" with "hardy" (since "rugged" is not in the list, "hardy" fits best). 6. Explanation: Each replacement uses a word from the list that best fits the meaning of the original phrase, making the sentence more concise and precise. Final answers: 1. realistic 2. punctuated 3. hardy