1. "utter" (as a verb) is usually used in this context: "No one uttered a sound." "She did not utter a word." "pronounce" would have emphasized HOW you say something, usually having to do with correctness rather than tone. ("You didn't pronounce that word correctly.") 2. I would say both "cut in" and "butt in" are appropriate. "butt in" is probably preferred, because it implies rudeness. She's apologizing, so she's expressing that she doesn't want to appear rude by "butting in." 3. This isn't a good sentence. If it ended with "criticizing it," that would make more sense. You should generally specify who or what you are criticizing. "Disputing" would require more context to know what was being argued against. "Arguing" is more generic, but it doesn't fit the context of simply watching a movie. If it was a "controversial film," then "arguing" would be more appropriate.

Thanks a lot Steve !! :D that has been really useful for me!

Just my two cents, but when I hear "cut in" I can only imagine someone pushing their way into a queue (or line) of people. And "butting in" means the same thing as interrupting someone who is speaking. #3 sounds correct to me. I consider the "it" after "criticizing" (US spelling) optional. "Disputing" means something similar to "contradicting", which would be inappropriate here. "Arguing" would make it sound like "we" were having a falling-out. Criticizing the thing that's in context (the movie) sounds good to me. :)

These senteces are from an excersise of an English book for C1. It is called 'Advanced Language Practice with key'. Thank you so much for your answer :)

I don't know where you got this from (?) but the third question is simply wrong. Based on that sentence then arguing is the only answer that makes sense because both 'disputing,' and 'criticising,' require objects and none is provided in this sentence. Question 2 is poorly framed because both answers are entirely correct.