unproductive

"My brother regularly takes the bus to school. "

"I watch these movies because they amuse me."

"The old, broken calculator was useless; it couldn't perform any calculations. "

"Chatting is a pleasant pastime."

"She can juggle flaming torches."

"The search for her lost keys was fruitless; she had to borrow her roommate's set. "

"It is generally known that the Earth is round."

"The bicycle's braking mechanisms allow the rider to safely slow down and stop. "

"The student's backpack had colorful affixes, little plastic charms attached to the straps. "

"The teacher emphasized the importance of both masculine and feminine qualities in students' learning. "

"The intricate formation of the puzzle pieces allowed the child to assemble a picture of a dog. "

"The farmer's land was very productive, yielding a large harvest of tomatoes. "