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B. might not come C. should not come
D. could not come题干主句中用了would be put off,且if从句中有时间状语this afternoon,可见本题是对将来情况的虚拟,所以if从句中谓语动词可以用三种表达:1. 过去式;2. were to do;3. should do 。所以正确答案是:C3. If I ________ with her last summer, I ________ with her now. A. worked; am getting on very well B. had worked; would get on very well C. had worked; would have got on very well
D. had worked; will get on very well本题由last summer可见if从句是对过去情况的假设,由now可见主句是对现在情况的虚拟,所以if从句中谓语动词该用过去完成时,主句谓语动词该用would do。所以正确答案是:B4. ________ your letter, I would have started off two days ago. A. If I received
B. Should I receive C. If I could have received D. Had I received由
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