Question

--I hear Jack Chan will come to Laiwu next week.
--Really? _______ he comes, my younger sister will be very happy,

A．If

B．Until

C．Unless

D．Before

Answer 1

A

考查時間狀語從句的引導詞。“我聽說成龍下周會來萊蕪。”“真的嗎？如果他來了，我妹妹將會非常高興。”A“如果”；B“直到”；C“除非”；D“在......之前”。故選A。