--- It’s a long time ____ I saw you last. --- Yes, and what a pity. It will be a long time ____ we see each other again.
Wang Hong is considered ___ one of the best students in our grade.
--- Do you doubt ____ he’ll be fired by the school? --- No, not a bit. But I doubt ____ he will bury himself into study.
His brother met him at the Great Theatre yesterday afternoon, so he ____ have attended your lecture.
--- Would you help sweep the floor? --- _____ . I’d rather water the flowers.
The police________ him to see if he had a gun.