Choose the correct option to complete the sentences. I didn't use to like running when I was at school, but I do now. 1. We ........... in the library when we heard the ambulance arriving. 2. The restaurant was closed because there ............. a fire in the kitchen. 3. They ............. sailing in the Mediterranean last summer. 4. What ........ while you were waiting for the rescue team? 5. As children, we ........ in this river every day during the summer.