Question

【题目】— I hear the famous singer Xu Song may come to Ningbo next month.

— Really? _______ he comes, my younger sister will be very excited.

A. If B. Until C. Unless D. Before

Answer 1

【答案】A

【解析】

在if 引导的时间状语中，if 引导的条件状语中，主句为一般现在时，从句用一般现在时，代替将来时，故选A