instituted

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

"Only a small fraction of the students passed the difficult math test. "

"The sudden rain caused a hurried congregation of students under the school's awning. "

"Can I entrust you with a secret?"

"The president of the student council used last year's debate as a precedent for this year's election rules. "

"Smoke detectors are mandatory in public buildings."

"The teacher's instruct on fractions was very helpful. "

"Go easy on him: he is but a child."

"Listen carefully when someone instructs you how to assemble the furniture."

"The church choir practiced the new spirituals for their Sunday service. "

"We plan to market an ecology model by next quarter."

"The new initiate in the chess club was eager to learn the rules. "