R 3 Complete the sentences with the present perfect simple or past perfect simple form of the verbs in brackets. Write the answers in your notebook 1 Before we travelled to Antarctica, we never (take) such a long trip. 2. As we are both very interested in our planet we ? (read) several books before we decided to make this trip 3 Both of us ? (want) to travel to Antarctica since we first heard about tours there. 4 We booked our tickets at a travel agency after we ? (check) which trips seemed most interesting 5 The travel agency ? (run) these tours since 2010, and their customers ? (be) very happy with them 6 We ? (sail) for about five days since leaving Argentina and ? (see) many types of fish in the ocean.​