Question

he said he ( ) back the next day. A.come B.came C.will come D. would come

Answer 1

He said he 【would come】back the next day.
应为主句谓语为过去式，所以从句与其保持一致，为过去将来时。

Answer 2

D
第二天要发生的事，肯定将来时。
主句是过去时，所以用过去将来时。
would come

Answer 3

D。Would come