concerning

"The connection between the two classrooms was established by installing a new phone line. "

"It is very important to give your daughter independence in her life so she learns from experience."

"The children physically exhausted themselves playing tag in the park. "

"Seeing her children laugh brought her a great happiness. "

"The teacher's explanation had a clear reference to the textbook. "

"Attending all your classes is of great importance to your success in school. "

"My son's recent drop in grades is quite worrisome. "

"The upcoming election concerns the future of our city. "

"I checked the list again and everything is done."

"The sentiment emerged that we were acting too soon."

"After years of struggling with addiction, he finally admitted he was an alcoholic and sought help. "

"She is an intellectual giant, and I respect her greatly."