He handed in the essay two days later than his classmates,but it was still _____the time limit set by the teacher.
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!
The governor made no ______ about the fight between the Red Shirts and the Thai Troops.
. No one knows exactly ______ after 2012.