UNIT 16 . CITIESPART 1. LB 2. A 3.D 4. C 5. BPART 2. 6. B

71. - BAI KIEM TRA ANH
BAI KIEM TRA ANH

71. D 72. C 73. D 74. B 75. B 76. A 77. C 78. A 79. B 80. A