Есть ли среди этих предложений Present simple? His achievements since his

Есть ли среди этих предложений Present simple? His achievements since his accident have shown him to be a real-life superman. They39;ve already proved that it39;s possible for nerves in the spinal cords of animals to regrow and reconnect. At first, he couldn39;t breathe without a machine, but now he can breathe on his own.