Verb conjugation of "shed" 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.
Please explain me the exact differences between British and American .... This year I'm trying to make the TOEFL. We can then discuss how we can prepare for this exam. I failed the first time.
Nice to meet you... Yes i need help in Portuguese. I am form Spain and I can help you with my native language if you have email or a phone, so that we can talk directly. Please call me.