The sentence that uses Standard English is The boy had grown up very quickly.
Standard English uses correct grammar and vocabulary, and the first sentence doesn't - it should be <em>The boy grew up very quickly.</em>
A team can have a healthy conflict if the conflict is solved in a healthy way. When a team openly communicates, addresses the conflict directly, and works together to solve the issue instead of arguing, then the problem and solution can be deemed as healthy. I hope I answered the question! :D
Start with some thing like ex:bfamily isnt always what you think it is the write number paragraphs and last write a conclusion