Can I pause a mock and finish it later?
You can leave a mock at any time with Save and exit and come back to it later from your dashboard. Your answers save as you go, so nothing you have answered is lost when you leave.
There is no real pause, though. Each part has its own timer, kept by our server, and the clock of the part you are in keeps running while you are away. If that part's time runs out before you come back, it is submitted with the answers saved so far.
The full mock takes about two hours: Reading, Listening, Writing and Speaking, in that order, as in the real test, with a one-minute break before Listening. For the most realistic result, choose a time when you can do it in one sitting.