_______you_______further problems with your printer contact your dealer for advice.A.If

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_______you_______further problems with your printer, contact your dealer for advice.

A.If, had

B.Have, had

C.Should, have

D.In case, had

热搜:关于氨基酸代谢错误的论述是_________。

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  • 参考答案。若答案为A,则主句谓语要用虚拟语气would+动词原形,而不用祈使语气。D.Incase“万一,以免,以防”,后面一般跟现在时或者should+动词原形,例如:Ialwaystakeanumbrellaincaseitrains.(我总是带上一把伞,以防下雨。)IwrotedownheraddressincaseIshouldforgetit.(我记下了她的地址,免得忘了。)