'Doing' in the Bible

And the Pharisees said to him, Why are they doing what it is not right to do on the Sabbath?

And while he was doing it, some was dropped by the wayside, and the birds came and took it for food.

And if anyone says to you, Why are you doing this? say, The Lord has need of him and will send him back straight away.

And some of those who were there said to them, What are you doing, taking the ass?

This was the Lord's doing, and it is a wonder in our eyes?