问题
选择题
I was just going to move away the heavy case but someone _______ it. Was it you?
A．has done
B．would do
C．had done
D．will do
答案
答案：C
考察时态，根据句意：我正要搬走这个沉重的箱子但是有人已经搬走了它。是你吗？根据题意可知，该句叙述的动作在我要搬它之前已经发生，故用过去完成时态，选C。
