I haven’t seen her _______.

I haven’t seen her _______.
A、during three weeks
B、since three weeks
C、three weeks ago
D、for three weeks
【正确答案】：D
【题目解析】：haven't seen 判断此处为现在完成时。因此排除A C； for +一段时间/ since +时间段，因此B不正确，答案选D