validated

"Her confidence in her ability to speak French helped her to participate more in class discussions. "

"Check the oil in your car once a month."

"He is a student of life."

"He successfully climbed the mountain."

"The validity of the student's excuse for missing class was questioned by the teacher. "

"Professor Smith, the head of the history department, gave a fascinating lecture on the Roman Empire. "

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

"Before I tackle the question directly, I must briefly review historical approaches to the problem."

"The research station that houses Wang and his team is outside Lijiang, a city of about 1.2 million people."

"emotional crisis"

"The software testing team performed a thorough validation of the new application to ensure it worked correctly before release. "

"I experienced a lot of new things during my summer vacation. "