英语语法问题The population of the town is double what it was then.

---_____ is the population of the town? The population of the city is three times what it was in the what is the population of china now?what was it in 1949? what is the population of china?what was it in 1949? The population of the small town was homogenous,mostly merch what is the population of your city What is the population of China What is the population of your twon It is about six thousand The present population of this city is three times（ ）it was 同义句what is the population of the world What is the population of China为什么用What[ What is the population of china?it's 1.2billion ,larger than