In this world there is no shortcut to take. So people, no matter how clever they are, can’t succeed_______ they work hard.
Nanjing is one of _______ in China.
We are sure one day the air in Beijing will be much ______ than today.
We arrived _____ Shanghai______ the morning of July 2nd.
_____ too much TV isn’t good _____ our eyes.
The weather in Beijing is ________.