______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、Should; have
D、In case; had

答案C

解析 本题考查虚拟语气。本句为省略了连接词if的虚拟语气,需将情态动词should提到句首引起倒装。根据句意表示的是对将来的假设,故排除If;had。也不是疑问句,故排除Have;had。in case引导的状语从句中大多用should,也可用实义动词的陈述语气,也排除In case;had。
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