| 1. If Dr. Wade was right, any apparent connection of the eating of highly processed foods and excelling at sports is purely coincidental.
(A)
If Dr.Wade was right, any apparent connection of the eating of
(B) Should Dr. Wade be right, any apparent connection of eating
(C) If Dr.Wade is right, any connection that is apparent between eating of
(D)
If Dr.Wade is right, any apparent connection between eating（D）
(E) Should Dr. Wade have been right, any connection apparent between eating
if 从句 什么时候可以 和 should 从句 可以互换/
是不是 根本就不可以互换 /
should 是表示什么的 ？ should 是不是 不能引导条件从句，只能引导虚拟。。 | 
