Mr. Li arrived at the Wuguang train station twenty minutes ago, but the train to Guangzhou_______yet.
----Have you got the result? ----No, It will be some time ________we know the result.
Little ______about his own health though he was very ill.
The light will be thrown ______ the cause of cancer by research that is now in progress.
—Why was he unhappy yesterday? —A letter from home ______ an attack of homesickness.
_____great progress Jim had made in _______ time!