For questions 17-24, read the text below. Use the word given in capitals at the end of some of the lines to form a word that fits in the gap in the same line. There is an example at the beginning (0). In the exam, write your answers IN CAPITAL LETTERS on the separate answer sheet.
Games in space
For astronauts on long missions into space, 0 _____ can be a real problem. In order to help the astronauts, 17 and doctors need to find out what this feels like. As part of the 18 programme, six volunteers will be locked away for 520 days to see what effect this has on their mind and body. During their time in 19 the volunteers will be able to communicate with their controllers, but only in a way that replicates the astronauts’ experience. For example, the further away from ‘Earth’ they get, the longer the delay in the signal, so they will be 20 to have a conversation in real time.
As part of the experiment, the volunteers will be allowed to play computer games. There will be a 21 of solo games and competitive games available. Afterwards, they will be asked to give 22 on how hard they found the games to play and what their 23 state was at the time. As a result of the 24 gathered, it may be possible to create special software for crews on future missions.