___you____further problems with your printer,contact your dealer for advice.这道题填If had
问题描述:
___you____further problems with your printer,contact your dealer for advice.这道题填If had
答
if have
答
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