You know it's love when all you want is that person to be happy, you're not part of their happiness.
A. even if
B. as if
C. if only
D. if ever
网友回答
(答案→)A. even if
B. as if
C. if only
D. if ever
解析：A 考察固定搭配。句义：你知道的，当你所想的全都是让那个人快乐时，那就是爱了。即使你不是他快乐的一部分。Even if意为：即使，虽然；符合语境。故A正确。