The formulation of the new policy took several months.

I arrayed the books in the shelves.

Scientists launched a probe to explore the outer reaches of the solar system.

The theorist proposed a new framework for understanding human behavior.

The surgeon performed a successful operation.

I couldn't find any available outlets to charge my phone.

Oxygen is needed for combustion.

Hydrogen is the lightest and most abundant element in the universe.

She only partially completed the project.

Finding the optimal solution requires careful analysis.