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______you______further problems with your printer, contact your dealer for advice.
______you______further problems with your printer, contact your dealer for advice.
admin
2015-06-25
55
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
A
解析
“might+have done”表示“可能已经做了”表示对过去情况的推测,must havedone表示“一定做了”,could have done表示“本来能够做某事而没有做”,三项均不符合句意。should have done表示“本应该做某事,而实际没做”,符合句意,A为答案。
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专业英语四级
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