correctness

"His two-fingered gesture emphasized what he had told his boss to do with his job."

"Instruction will be provided on how to handle difficult customers."

"The historical romance novel was a bestseller in the bookstore. "

"The algorithm for calculating the average test score in class involved adding all the scores together and then dividing by the number of students. "

"The student answered the math problem correctly. "

"The building's design specification clearly outlines the required materials for the walls. "

"Our history class project is to create a timeline of important events in World War II. "

"My teacher explained the new math concept, and I understood it perfectly. "

"My parents are ensuring my younger sister gets to school on time every day. "

"I recognised his face immediately."

"The students' clothing showed a strong conformity to the school's dress code. "

"The school has high academic standards, so students must study hard to succeed. "