Choose the correct Words. Listen to this (1) Have /Has you ever listened to a podcast? I (2) 've/ 's listened to a lot

Have you ever listened to a podcast? I\'ve listened to a lot of them since I\'ve had my new MP3 player. They help to pass the time while I\'m travelling to school. I always download them from the Internet. This one is about new technology. But the most interesting one I heard was an interview with my favourite singer. While I was listening to it, I missed my stop and I forgot to get off the bus!