didn't see you yesterday——i didn't see you yesterday——______i was ill yesterday ,________i didn't go to workA because so B for and C \ but D \ so

didn't see you yesterday——i didn't see you yesterday——______i was ill yesterday ,________i didn't go to workA because so B for and C \ but D \ so
didn't see you yesterday
——i didn't see you yesterday
——______i was ill yesterday ,________i didn't go to work
A because so B for and C \ but D \ so

didn't see you yesterday——i didn't see you yesterday——______i was ill yesterday ,________i didn't go to workA because so B for and C \ but D \ so
当然选D啊
because和so一般不同时使用
译文是
--我昨天怎么没看到你啊?
--我昨天生病了,所以我没 有去工作.