A．althoughB．becauseC．soD．if[A] although [C] so[B] becau……

单项选择题[A] among [C] in[B] between [D] to

单项选择题[A] lain [C] set[B] stationed [D] located

单项选择题[A] find [C] uncover[B] expose [D] discover

单项选择题[A] waterways [C] channels[B] waterfronts [D] paths

单项选择题[A] exact [C] certain[B] definite [D] decisive