______before we leave the day after tomorrow, we should have a wonderful time together.(北京大学2007年试题)

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问题 ______before we leave the day after tomorrow, we should have a wonderful time together.(北京大学2007年试题)

选项 A、Had they arrived
B、Would they arrive
C、Were they arriving
D、Were they to arrive

答案D

解析 the day after tomorrow(后天)表示将来,所以要用表示将来时的虚拟语气“were to”形式。从句部分有were,should或had,可省略if,并将were,should或had移到从句句首。
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