.The other day I was showing the boys the weekly chemistry experiment when, ________ I knew it, the mixture was bubbling over everywhere.
Mother’s love is true love! She’s never stopped loving you you become or you do.
I’m afraid we’ll have to work extra hours, for there are still some problems .
I have been living in Haikou for 10 years, but seldom so lonely as now.
We have every reason to believe that 2010 World Expo in Shanghai will be success.
This time next week, we _______ a meeting in Beijing.