<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def get_subreddit_image(self, subreddit, id):
 """ Return the Gallery_image with the id submitted to subreddit gallery :param subreddit: The subreddit the image has been submitted to. :param id: The id of the image we want. """

        url = self._base_url + "/3/gallery/r/{0}/{1}".format(subreddit, id)
        resp = self._send_request(url)
        return Gallery_image(resp, self)