The girl is ten years old(岁).name is Cindy.
The hazy weather has ________ for almost a week in North China. —Yes, and the government has tried to solve it.
Is your father home?—No,he’s working late ____ the office.[ ]
Do you know ____________ the population of China is?—Yes, it has the __________ population in the world, about 1.3 billion.
Da Shan is _________ at Chinese. He can speak Chinese very _________.