We often see Betty ____ the old man with his housework.
--- Which city has ________ population, Shanghai, Hong Kong or Qingdao? --- Shanghai, of course.
Mr Fan ________ this watch in 2005. He ________ it for 6 years.
________, or you'll be late for school.
— _______ expensive mobile phone it is! —Yes, but I think _______ style is quite fashionable.
--- What____ your mother______? ---- She is friendly and kind