Question

【题目】The judge remarked that the real question was ______ he could establish an alibi(不在场证明).

A．after B．because C．if D．whether

Answer 1

【答案】D

【解析】句意：法官评论真正的问题是他是否能够确立一个不在场证明。空缺处引导表语从句，排除C项，if不能引导表语从句；根据句意，选D项。