If you have trouble pronouncing the word, you can repeat it over and over again _______ you are comfortable with it.
If you ______ for your favorite TV programs, you will feel sleepy.
—Have you heard of ______ about Jeremy Lin (林书豪)?— Yes. He did quite well in the last NBA basketball match.
It’s bad for your eyes _____computer games too much.
The weather in Guiyang in winter is ___than that in Harbin. They are different.
When the Greens moved into the new house last week,____ was dirty, so they did a big cleaning.