单项选择题[A] way [C] method[B] means [D] approach
单项选择题[A] focuses [C] depends[B] bases [D] takes
单项选择题[A] off [C] to[B] with [D] by
单项选择题[A] that [C] when[B] where [D] as
单项选择题[A] escape [C] dry[B] drain [D] leak