you further 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、In case, had
D、Should, have

答案D

解析这里是虚拟语气的句型，省略了连接词if,所以情态动词should倒装了，用来表示将来如果有什么问题。但是这里不是表示与事实相反的假设，所以选项A不对。也不是疑问句式，选项B不对。而在 in case引导的状语从句中大多数情况是用should，也有用实义动词的陈述语气，所以选项C也错了。

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