题目内容：

___ to carry out the plan in time,they will make careful preparations.
A.Detemind
B.Having been determined
为什么选A不选B.
下决定不是发生在计划之前吗?那样不就应该用“Having been determined”了吗?

优质解答

B是被动 ,被动 决定及时实行计划?