问题
选择题
— Has Tom finished writing his essay today?
— I have no idea. He ______ it this morning.
A．wrote
B．has written
C．was writing
D．had written
答案
答案：C
考查时态，句意：汤姆今天写完他的论文了吗？——我不知道。他这个上午一直在写。可知下文描述的是过去正在进行的动作，故选C。