. If only I ________ how to operate an electronic computer as you do. A．had know
题型：不详难度：来源：
. If only I ________ how to operate an electronic computer as you do. | A．had known | B．would know | | C．should know | D．knew |
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答案
| D |
解析
| 因为if only (要是…就要了) 其后的句子要用过去式表示虚拟语气，由as you do可知，是与现在事实相反，所以选knew。 |
举一反三
But for the party, he ________ of hunger fifteen years ago. | A．would have died | B．would die | | C．must have died | D．must die |
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I would have come earlier, but I ________ that you were waiting for me. | A．didn’t know | B．hadn’t know | | C．would have known | D．haven’t known |
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The teacher agreed to the suggestion that the students ________ two weeks to prepare for the exam. | A．give | B．should give | | C．be given | D．would be given |
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Wang Ling, one of my friends, is very good at English. He speaks English as if he ________ an Englishman. | A．were | B．would be | | C．have been | D．had been |
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We ________ our lives had it not been for the policeman. | A．would have lost | B．should lose | | C．might lose | D．had lost |
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