Question

．— Has Tom finished his report so far? — I have no idea．He ______it this morning． A．did

．— Has Tom finished his report so far? — I have no idea．He ______it this morning． A．did B．has done C．was doing D．had done

Answer 1

C

考查时态，句意：--汤姆到现在完成报告了吗？--我不知道，他今天早上正在写。过去进行时表示过去正在做的动作，但不一定完成，和句意相符，选C。