slippery

"The weather forecast is changeable, so we might need an umbrella. "

"Consider that we’ve had three major events and the year has hardly begun."

"The teacher stood and pointed to the map, standing in front of the class. "

"The friction between the pencil and paper allows us to write. "

"My friend studied hard for the test; therefore, she got a good grade. "

"Her interest in hobbies was inconstant; one week she'd be obsessed with painting, and the next she'd completely forget about it. "

"The science class experimented with different substances to see how they reacted to heat. "

"The library offered an extension on the due date for the overdue books. "

"My sister's reputation for being organized helped her excel in school. "

"The email about the meeting circulated among the team members. "

"The farmer unstable the horse from the stable before taking it to the field. "

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