问题描述：
语法选择题：She gave me that notebook on my birthday,and I_____it in my draw.
A.have since kept
B.since kept
C.am since keeping
D.had since kept
答案是A,为什么不选D?
A.have since kept
B.since kept
C.am since keeping
D.had since kept
答案是A,为什么不选D?
问题解答：
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