Articles - 'a', 'an' and 'the'


  • Choose the missing articles (a, an or the) in the spaces.
  • Click the button at the bottom to check your answers.
  • Press the "refresh" button on your browser to play again.

   a      a      a      a      a      a      a      The      the      the      The      the      the      The      the      the      The      the  
Scientists believe they have found help for older people suffering from poor eyesight. solution is shining special red light in eyes for three minutes. Doctors say three-minute daily dose of special red light for two weeks could help improve age-related vision problems. However, they say not any red light will help improve eyesight. co-author of a study into effects of red light and vision in older people explained why. Professor Glen Jeffery said: "I strongly suggest that people do not just go and buy red light off the web. They have to produce right wavelength and be reliable. We are looking for commercial partner to do this and to price them at under around $20 to $25."

study was carried out by team from University College London. Researchers conducted tests on 24 men and women aged between 28 and 72. They said some cells that help us process light had deteriorated in older people. Doctors say their red light improved ability of these people to detect different colours, particularly blue. vision of these older people improved by as much as 22 per cent. Doctor Jeffrey said: "Populations are ageing rapidly and this is going to be major issue in future. We need to gear up for this." He added: "If you can't see clearly you can't read or watch TV. You also tend to fall down and break bones. Our lights are step in this direction."

Back to the red light lesson.

Share this lesson

More Free Sites by Sean Banville

Online Activities