______if I had arrived yesterday without letting you know beforehand?

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问题 ______if I had arrived yesterday without letting you know beforehand?

选项 A、Would you be surprised
B、Were you surprised
C、Had you been surprised
D、Would you have been surprised

答案D

解析 该句为虚拟过去时条件句,主句谓语动词形式为would have+过去分词。
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