toil

"My friend told me there was something in the box, but I didn't know what it was yet. "

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

"The grueling was a tough one, leaving the dogs exhausted and panting heavily. "

"My sister is very helpful, especially when it comes to organizing things. "

"I need to study my biology notes."

"Putting a wide vibrato on a single 16th triplet note at 160 beats per minute seems rather excessive."

"The summer heat was relentless, making it hard to do anything outside. "

"The architecture of this clock is very intricate."

"We prepared the spacecraft for takeoff."

"Moisture of the earth is exhausted by evaporation."

"It frustrates me to do all this work and then lose it all."

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