mendacious

"The student was being dishonest when he claimed he didn't cheat on the test, even though he was looking at his neighbor's paper. "

"The new math homework was easily understood by the students. "

"The teacher said the rumor about a surprise party was untrue. "

"The student was untruthful about finishing his homework, claiming he had completed it when he hadn't. "

"Members of the public may not proceed beyond this point."

"My grandfather has a collection of old records that he loves to play on his record player. "

"Each person is unique, both mentally and physically."

"During the crackdown, many opponents of the regime were arrested."

"My teacher made a statement about the importance of studying hard. "

"The politician spoke at the school assembly about the importance of community involvement. "

"the accomplishment of an enterprise, of a prophecy, etc"

"a claim of ownership"