_______ will it take me to get to the Golden Street?—About half an hour.[ ]

Daniel is one of those students who _______ always willing to help others .

After the Asian Games, ______ people came to Guangzhou for a visit during holidays.

The air in Rizhao is getting much _____ now than a few years ago .

Everyone knows that _____ sun is in the center of the solar system（太阳系）