The public transportation in this city is very convenient, where many buses run ______.
________ twice, the postman refused to deliver our letters unless we chained our dog. (2009北京卷)
For breakfast he only drinks juice from fresh fruit ________ on his own farm. (2009)
Now that we’ve discussed our problem, are people happy with the decisions ________? (2009全国I)
When we visited my old family home, memory came ________ back. (2009辽宁卷)
Ladies and gentlemen, please remain ________ until the plane has come to a complete stop. (2009四川卷)