Verb conjugation of "signal" in English

I bought the ticket very quickly and ran to the gate. A stewardess was waiting for me and waved. She shouted that I should hurry up. I ran as fast as I could and entered the gate leading to the plane.
On the frozen lake, you can skate, but I would never dare it because it is far too dangerous. Who knows how thick the ice really is and how accurate the measurements are. It can break.
Every day I watch TV about the sports news while I am cooking. In the news, there is always something sports. I love not only watching but also playing myself. We have a team of ten people.