For many years, ____ animals for carrying food and other supplies from one area to another has been a means of living in Xinjiang Autonomous Region .
—Have you handed in your schoolwork yet? —Yes, I have. I guess it ______ now.
in the mountains for two weeks, the two bous were finally saved by the local police.
After the long journey, the three of them went back home, ______.
I’d appreciate ____ if you would like to teach me how to use the computer.
Kathy______ a lot of Spanish by playing with the native boys and girls.