Find out the main idea of each message below (1-6 Choose from the ideas a-f. There is one extra letter that you do not need. There is an example (g) at the beginning. 1 Your battery is now empty. Please can you recharge it? 2 Ask a crew member if you wish to use electronic equipment during the flight 3 Defend your PC from hackers and viruses. Download "Anti-Virus" now! 4 Electronic devices may not be used until the plane has come to a standstill. 5 There is an insufficient credit on your phone to make this call 6 Your computer may have been infected. Do you wish to remove this file now? a) Your message has not been sent for technical reasons b) You do not have enough money to telephone anybody c) You can only use electronic equipment when the aircraft has stopped. d) You can delete a possible virus from your PC immediately. e) You can buy protection for your computer on-line. f) Do not use laptops or phones without first checking with the staff while on board. g) There is not enough energy for you to use this device.