you further problems with your printer, contact your dealer for advice. （2005年考试真题）

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问题 ______ you ______ further problems with your printer, contact your dealer for advice. （2005年考试真题）

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

答案C

解析根据句意，本句表示对将来情况的虚拟，所以只能选C。

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专业英语四级

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