No one can be sure in a million years.
Comrade Wang ________ be in Shanghai—I saw him in the company only a few minutes ago.
—Little Jim has been eating sweets all day.—It’s no ________ he is not hungry
—You were out when I dropped in at your house yesterday.—Oh, I________ for a friend from Beijing at the railway station.
─What are you reading, Jane?─Some books on ________ education, I’m now interested in ________ education of young people.
He stayed there for quite a long time, during ________ time he learned much spoken English.