My family and I (are taking part in/have taken part in) a 10 mile stroll around London today. My dad and I (strolled/were strolling) around London from 9 am to 3 pm. We (have to/had to) check three times during the stroll. The atmosphere (was/is) fun. There (are/were) a lot of people, some people (wore/were wearing) fancy dress. Cadbury* people (are giving/were giving) out free chocolates. While we (strolled/were strolling) we visited some great sights of London. At the finish I (got/get) a prize. It is one of the most exciting days out I (had/have ever had).