问题
单项选择题
I'm tired out. I() all afternoon and I don't seem to have finished anything.
A. shopped
B. have shopped
C. had shopped
D. have been shopping
答案
参考答案：D
解析：
本题考查动词的时态。由I am tired out可知说话人说的是现在的事情，所以排除A和C。由句意可知说话人逛了一个下午仍一无所获，可知动作的影响还在持续，所以 应该用现在完成进行时。故选D。