You need to use your head to solve this problem.

This math problem can be solved using a specific formula.

We have our wedding ceremony tomorrow.

Organic solvents play an important role in chemical reactions.

We are considering introducing a new voting system.

We have developed a new methodology to solve this problem.

Learning a new input method is difficult.

I like hunting using a retrievable arrow attached to a string.

His eyes were filled with desire.

His desire is infinite.