___ the phenomenon of "bystander effect" in the Yueyue event, most Chinese Strongly believe that there still exist love and warmth in people's hearts.
One evening, I was with my friend Auguste Dupin at his house in Paris when he had a visit _____ Georges Godinot, head of the Paris Police.
. When he ______ the door, he found his keys were nowhere.
—Putting on a happy face not only helps us make friends but also makes us feel better. —______.
___ Mary is sleepy, she insists on finishing her homework rather than ___ to sleep.
It is ______ the customers’ needs that has made chain stores so popular in big cities in China.