impetus

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

"The teacher's interesting presentation stimulated the students to ask many questions. "

"The development of this story has been slow."

"I encouraged him during his race."

"I must make this deadline or my boss will kill me!"

"Any epidemic outbreak causes understandable panic."

"The shop's external displays were designed to attract customers. "

"The upcoming school holiday is a welcome break for the students. "

"Our company associated with a local charity to help raise money for their programs. "

"We saw the internal compartments."

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

"The student was the receiver of the first-place award for her science project. "