pitiless

"Throughout my life, I have always failed."

"He is a student of life."

"The teacher was merciless in grading the exams; even small mistakes cost students many points. "

"The teacher is grading the students' math tests. "

"She received many presents for her birthday."

"My daughter's teacher is very kind and helpful. "

"I have a house and a car."

"A kindly old man sits on the park bench every afternoon feeding pigeons."

"All he had to show for four years of attendance at college was a framed piece of paper."

"The Communist Party has a policy of returning power to the workers."

"The teacher's unkind words made the student feel very sad. "

"The wool on my arm produced a strange feeling."