I didn't know when they____again.A.came B.were coming C.had came D.had been comintg

I didn't know when they____again.A.came B.were coming C.had came D.had been comintg
I didn't know when they____again.
A.came B.were coming C.had came D.had been comintg

I didn't know when they____again.A.came B.were coming C.had came D.had been comintg
选B ,从句过去进行时表将来的状态 .
CD项都是过去完成时态,应该不可以,这里没有过去的事情对现在的影响.
A只是个普通的一般过去时,而从句不是对过去的描述.

应该是would come吧

选项没有would come, 那就只能选B

b