I didn’t quite follow him because he explained the theory _____that is too abstract for me.
He used to teach in that university and I _________ ride past it on my way to work.
On Sundays when I was a child, Father and I _______ get up early and go fishing.
—Hurry up, Michael! It’s ten to three.—Goodness me! The class_______. I’ll be late again.
It was playing computer games that cost the boy a lot of time that he __________ doing his lessons.
Professor Smith, many students want to see you. __________ they wait here or outside?