_you__further problems with your printer,contact your dealer for advice.这道题填If had

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___you____further problems with your printer,contact your dealer for advice.这道题填If had
___you____further problems with your printer,contact your dealer for advice.这道题填If had

___you____further problems with your printer,contact your dealer for advice.这道题填If had
我觉得应该是
Should have
因为后面用的是祈使句,所以前面需要提前should 来表示虚拟语气

if have

PR PR pr. ___you____further problems with your printer,contact your dealer for advice.这道题填If had pr是什么意思 pr是什么 China PR 4(pq+pr)-(4pq+pr)+(rq-3pr) 化简 PR发料单中PR是什么的缩写? PR on line PR是什么的缩写酒吧pr是什么|酒吧pr是什么意思大型PR活动策划,PR是什么意思啊? 酒吧pr是什么|酒吧pr是什么意思 -4(pq+pr)+(4pq+pr) -4(pq+pr)+(4pq+pr) 澳洲担保pr如何转新西兰pr 什么是PR值?怎样提高PR值 -4(pq+pr)+(4pd+pr)