If I you，I more attention to English idioms and phrases.
A. was; shall pay
B. am; will pay
C. would be; would pay
D. were; would pay
网友回答
A. was; shall pay
B. am; will pay
C. would be; would pay
(答案→)D. were; would pay
解析：句意：如果我是你的话，我会更加注意英语短语和惯用语的。这是虚拟语气，这是对现在的虚拟，从句用过去式，be 的过去式用were；主句用would+动词原形。故选D。