Complete the story with past simple, past calontinuous, or past perfect forms of the verbs in (brackets). Did you see that? It happened (happen) when I was on a sailing trip with my school. I (sit) on the boat when a dolphin suddenly jumped out of the water. My classmates and I were thrilled because we (never / see) one before. The dolphin (swim) next to our boat, so everyone decided to take a picture. Unfortunately, someone had put a bag next to my feet and I (not/ notice). So, when I stood up to take the photo, I (trip) over the bag and (fall) into the water. Our boat (move) really fast, but luckily the captain stopped it for me. However, when I got back on the boat, the other students (not / seem) as happy as me: the dolphin (disappear) and everyone (miss) an opportunity to take the photo of a lifetime!