witnessing

"My knowledge of history helped me understand the current political situation better. "

"I hereby certify the authenticity of this copy."

"The company is establishing a new branch in Chicago to better serve its Midwest customers. "

"The class squirmed and fidgeted in the uncomfortable new chairs."

"After days of inquiries, he finally recovered his lost wallet."

"His rage only increased when I told him of the lost money."

"The violinist was a master of her instrument."

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

"It was an experience he would not soon forget."

"In biology class, we learned that technically, even fruits are vegetables because vegetables are any plant. "

"The increasing number of empty desks witnessed a decline in school enrollment. "

"The detective investigated the theft of the school's valuable computer equipment. "