Question

—Has Sam finished his report?
—I have no idea. He _______ it in his office the whole morning.       

A．writes	B．has written
C．will write	D．was writing

Answer 1

D  

试题分析：句意：山姆已经完成了他的报告吗？我也不清楚。整个上午他都在他的办公室里写。根据the whole morning.就可知该用过去进行时，所以选D。