improvise

"We prepared the spacecraft for takeoff."

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

"I rather enjoy helping my brother with his homework. "

"The teacher guided the students through the difficult math problem. "

"Many animals fear fire by instinct."

"He had no speech prepared, so he improvised."

"Without knowing the exact amount of money needed for the trip, all we could do was guesswork. "

"To proceed on a journey."

"He was a slow and careful driver."

"After weeks of hard work, I invented a new way to alphabetize matchbooks."

"Imagination is one of the most advanced human faculties."

"It was hard to hear the sounds of his speech over the noise. He had a bad speech impediment."