Thanks to Chiara for the summary:
Yesterday we studied Unit 3A: ''the truth about air travel". At first we learned about the safety instructions, during an emergency on a plane. Then we talked about the importance of the large two-way mirrors in customs that let the customs officers observe all passengers' actions, we talked about the problem that can be causes by people asking for wheelchair. To sum up we learned about all this stuff by doing the exercises of listening, vocabulary and reading. In addition we did the exercises 1-2-3-4 on page 154.