We will attend a wedding ceremony tomorrow.

This game is easy if you think in reverse.

He was able to solve the complex calculation quickly.

He was calculating in his head.

It seems that this river is flowing backwards.

You must not go in the reverse direction on this road.

You must not proceed in the reverse direction on this road.

He has a Polish friend.

We are considering introducing a new voting system.

Learning a new input method is difficult.