grueling

"The construction job was heartbreaking, with its backbreaking hours and heavy lifting. "

"After running the marathon, she collapsed from sheer exhaustion. "

"The heavy rain was leaving puddles all over the playground. "

"My uncle ran in the city marathon last weekend. "

"The horse race was a gruelling; the winning animal collapsed immediately after crossing the finish line. "

"I need to study my biology notes."

"She trained seven hours a day to prepare for the Olympics."

"The student sighed with relief as he reached the finishes of his exams. "

"Moisture of the earth is exhausted by evaporation."

"Moisture of the earth is exhausted by evaporation."

"How long has it been since your last physical?"

"The complicated instructions on the new software difficult me from completing the project on time. "