You can help Wikipedia by expanding it, simply by grabbing one with both hands and moving them apart.

It is a stub and you can help Wikipedia by expanding it.

If you know these sources and can provide full information, you can help Wikipedia by completing it.

You can help Wikipedia by doing that.

However, you can help Wikipedia by adding languages that aren't related to the ones already here.

This list is not finished; you can help Wikipedia by adding to it.

You can help Wikipedia by improving and expanding it.

You can help Wikipedia by adding verifiable data to it.

These lists are not finished; you can help Wikipedia by adding to them.

You can help Wikipedia by fixing it.