We couldn't use the milk because it _____ had.A.has been B.has gone C.had been D.had gone要原因

问题描述:

We couldn't use the milk because it _____ had.A.has been B.has gone C.had been D.had gone要原因

D.had gone
go bad 是变坏了的用法,
因为前面已经是过去式了couldn't,所以需要用过去完成时.had gone