—When did your daughter go to sleep last night?—She didn’t go to bed ______ she finished her homework.
---Why do you make friends with Joe ? ---He isn’t a good student, but he is honest.
--- Are youfrom America? --- No, none of us.
---How often are the Olympic Games held? ---four years.
---I’m going for a summer camp in Beijing next month. ---.
---Are there any oranges in the bag? -- -Yes. But only .