afford；holes；progress；thousands of；safe
（1）China has made great in the past forty years．
（2）People planted trees in the suburb of the city， Urumqi．
（3）Nowadays， everyone feels very and convenient in the streets of different cities in Xinjiang．
（4）In the book A Brief History of Time， the famous British professor Dr． Hawking describes his theory of black ．
（5）Many families are richer now so they can a big car like SUV．