高等继续教育 / 大学英语II
正确率：100%
题型描述: 单选题
＿＿＿ your letter，I would have started off two days ago.
A.Should I receive
B.Had I received
C.If I could have received
D.If I received
＿＿＿ your letter，I would have started off two days ago.
A.Should I receive
B.Had I received
C.If I could have received
D.If I received
参考答案：
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