71. Mr. Thanh couldn't enjoy the meal because of the stomachache. → The stomachache prevented................................................................................................ 72. How heavy is the chicken? → What........................................................................................................................................... 73. A train leaves at eight o'clock every morning. → There is.............................................................................................................................. 74. This picture too high for him to touch. → He is tall..................................................................................................................................... 75. There is no need for you to talk so loudly. → You don't.................................................................................................................................... 76. Miss Lan is a fast runner. → Miss Lan runs.............................................................................................................................. 77. The visitor spoke so quickly that I couldn't understand what he said. → The visitor spoke too................................................................................................................ 78. Trung didn't go to school last Saturday. —> Trung was................................................................................................................................. 79. My house is the oldest house on the stress. → No houses.................................................................................................................................... 80. It takes my mother half an hour to cook lunch. →My mother spends........................................................................................................................