All materials______for the upcoming seminar need to be copied at least two days

游客2025-06-18 0

问题 All materials______for the upcoming seminar need to be copied at least two days in advance.

选项 A、called
B、required
C、questioned
D、invited

答案 B

解析从句意来看，All materials…seminar的意思是“即将召开的研讨会所需的资料”。(C)questioned“被质问的”和(D)invited“被邀请的”不能用来修饰materials。

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