One of my greatest hobbies (be) aviation. On the one hand I (be) very interested in airlines. I (want) to (know) how such big companies (work) and how they are (structure). On the other hand I (be) also fascinated by aircraft. It (be) really amazing how such machines can (take) off and (land) that easily. In my free I (be) also a plane-spotter. I love (photograph) aircraft at airports.