Their preparing for the presentation required them to review all the data twice.

She was preparing the lesson plan when the power went out.

The preparings for the festival took all week.

A preparative was assigned to each volunteer, so the event would run smoothly.

The chemist developed a preparative technique to produce the compound on a gram scale.

The preparers finished the meals an hour before the event started.

The preparator carefully mounted the fossil on foam before the museum opened.

The preparators carefully labeled each fossil before it was placed in the display case.

The team held a preparational workshop to align everyone's expectations before the project kickoff.

The chemist preparatively mixed the reagents to ensure the reaction proceeded smoothly.