Mary has _______ a difficult question to me.
It was not until I got home ________ I found my wallet missing.
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.