htwk_english.user.js

// ==UserScript==
// @name htwk_english
// @match https://webcourses.htwk-leipzig.de/tt/index.php?*
// @require https://code.jquery.com/jquery-3.5.1.min.js
// @grant none
// ==/UserScript==

$("input[type='radio']").eq(0).trigger("focus");

// https://api.jquery.com/on
// https://api.jquery.com/category/events/event-object
$(document).on(
  "keydown",
  (event) =>
  {
    if (event.which === 13) { // enter
      $(".term #input[type='text']").val($("#trainer_head").text());
      $("input.button[name='solve'], #button_next").trigger("click");
    }
  }
);

// $(document).on(
//   "keydown",
//   (event) =>
//   {
//     if (event.which === 80) { // p
//       $("div.mejs-playpause-button > button").trigger("click");
//     }
//   }
// );

$(document).on("keydown", (event) => {console.log(event.which);});