There are many factors that _________ the popularity of the 3G cell phone.Higher speed of surfing the Internet is one.
_____ his sister, Jack is quiet, and does not easily make friends.
We do morning exercise every day, from which we ______ a lot.
I know that smoking is a bad habit, but I can’t ______ the feeling that I need to smoke.
In my opinion, ______ we’re home for the holidays, it doesn’t mean we should spend all our time watching TV.
—Wang Meng won another Olympic gold medal in the women’s 1000m final of speed skating. —_______ !