flatness

"His dullness in class made it hard for him to understand the complicated math problems. "

"The gardener used a special tool to improve the soil's aeration so the plants could grow better. "

"The crowd was distracted by a helicopter hovering over the stadium when the only goal of the game was scored."

"After school, Mark skateboarding down the park path. "

"My grades improved substantially after I started studying regularly. "

"The distribution of the school supplies was done fairly, giving each student an equal amount. "

"The gardener's scatters of seeds created a beautiful wildflower meadow. "

"Have you looked at the overnights yet?"

"Is anyone here afraid of suffering hardship?"

"The freshness of the morning air made the walk to school feel invigorating. "

"The math problem required us to understand the dimensional relationships of the cube. "

"The infection spread quickly through the classroom after one student got sick. "