题目内容：

看看这道英语语法题.....
-------you-------further problems with your printer,contact your dealer for advice.
A.If,had
B.Have,had
C.Should,have
D.In case,had

优质解答

考察的是 if 非真实条件句的省略/ 倒装,应该选择c.原形是if you should have further problems with your printer,./改为Should you have further problems with your printer,.