Robert Edwards was blinded in a traffic (21) ________ nine years ago． He was also half deaf because of (22) ________. Last week, he was walking near his home when a thunderstorm approached． He came under a tree and was struck (23)________． He was knocked to the ground and woke up some 20 minutes later, lying face down in water below a tree． He went into the house and (24)________ in bed． A short time later, he (25)________; his legs couldn’t move and he was trembling, but, when he opened his eyes, he could see the clock across the room (26)________ him． When his wife entered, he saw her for the first time (27)________． Doctors confirm that he has regained his (28)________ and hearing apparently from the (29)________ of lighting, but they are unable to explain the reason. The only possible explanation offered by one doctor was that, since Edwards lost his sight (30)________ of a hard blow in a terrible accident, perhaps the only way could be restored was by another blow.