violence
swimmed is the incorrect word. the correct term is swam
The phrase "can't be" is incorrect because it lacks a subject. By adding either "it" or "That" the phrase becomes a complete sentence. It can't be! That can't be!
The incorrect phrase is sport's. It should just be sports.
You may call them Parisians, or one person would be a Parisian. If you meant something about telephoning, please ask again but phrase it differently.
No it's not incorrect. The usage will vary depending on context however.
It would be correct to say that they send messages to each other often. You could also say, they send messages to other people, often. It makes no sense to say they send messages to other.
To use a phrase or word in an incorrect situation
Yes. The correct phrase is "has been".
"I'm calling you" is an English equivalent of the French phrase Je t'appelle. The declaration also translates as "I'm telephoning you" in English. The pronunciation will be "zhuh ta-pel" in French.
The correct phrase is "he doesn't," which is the contraction for "he does not." "He don't" is grammatically incorrect.
Yes, the letter "u" should be replaced with "you".