问题补充:
Susan may have missed her train, in case she won’t arrive for another hour.
A. that
B. what
C. which
D. whose
答案:
A. that
B. what
(答案→)C. which
D. whose
解析:考察定语从句。本题定语从句的先行词是指前面一句话的内容,which case就是指代前面这句话的内容,做介词in的宾语。That不能放在介词的后面,what不能引导定语从句,whose不能指代一句话的内容。句意:Susan一定错过了她的火车,在这种情况下,他再过一小时也到不了。故C正确。