Answer:
Not only did the cat eat the beef but also the chicken. or, The cat not only ate the beef but also the chicken.
Explanation:
Personally, i like the second sentence better but i think both could work :)
Explanation:
Can u show the whole question
Answer:
To sigh loudly would imply that you are being snotty and you want your way, but it is more personal. You may just be sighing to one specific person instead of trying to draw attention to yourself over a bunch of people, perhaps to gain their attention.