Gap-fill exercise. Hidden prepositions: en, de, con, a, con, a, de. .
While you are listening to the audio, fill in all the gaps with the hidden prepositions. Then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can press the "?" button to get the equivalent in Enghish. Note that you will lose points if you ask for hints or clues!