49 He said that that story had happened long ago.
50 She said she would live in town till her husband returned from the expedition andwhen he returned, they would go to the seaside together.
51 The local man explained to me that they would wait for the fisherman to return until it got dark.
52 The doctor said that after he left hospital, they would take him to the South.
53 Unless you try hard, you can't pass the examination.
54 If yo leave the lights on all night, you'll waste electricity.
55 Unless you rest yourself, you really will be ill.
56 Unless you keep your feet dry, you will catch a cold.
57 If you don't water your plants everday, they will die.
58 I think that you had better hurry or you will miss your bus.
59 Unless you wear your fur coat, you'll get a cold.
60 Unless you don't promise to try harder, I will help you.
61 She said that she would have a cup with me.
62 George told Mary that ha had seen the film three times.
