Question

— 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

A

四個選項分別表示如果,直到、除非和在……之前，根據題意選A,如果他來，我妹妹會非常興奮。