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 should表示语气较强的假设，意为“万一，竟然”，用于条件从句中，if可省略，should要置于从句的开头。

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