youfurther problems with your printer, contact your dealer for advice.

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问题 ______you______further problems with your printer, contact your dealer for advice.

选项 A、If, had
B、Have, had
C、Should, have
D、In case, had

答案C

解析句子用了虚拟语气。should可以表示语气较强的假设“万一，竟然”，用于虚拟语气的条件从句中，即should have been形式。此时if可省略，should要置于从句的开头。

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考研英语一

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