considered与be considered的区别

题目

considered与be considered的区别
49.All things _A_,the planned trip will have to be called off.
A considered B be considered C considering D having considered
为什么不是B

答案

句子后面还有个 will have to be 这个才是这句话的谓语动词
所以 前面只能是非谓语 首先排除B
而things是被思考的,是被动,而considering和having considered是表主动的,所以不选
这里considered是作定语 修饰all things