---Are Mr. and Mrs. Wang living alone in the house? ---Yes, they have three sons, but ______ of them live in their own houses.
—I could believe my eyes when I came to Nanjing last year. —Yes. Great changes have taken place in the past few years.
When Nanjing Metro Line 3 came into use, it became much to travel from the north of the Changjiang River to the city centre.
— is the number of the students in your school, Wu Dong? —It’s more than 1,000, but I’m not sure about it.
Customs change from country to country. Some customs in China are quite different from in Western countries.
—Excuse me, Liu Ming. Could you tell me what a UFO is like? —Sorry. Perhaps really knows whether there is a UFO in the world.