Where did you meet him—I met him on a number eleven bus, if youknow.

We’ll leave for senior high schools soon. It’s really difficult _______ goodbye to our teachers and friends.

The parking meters are installed in streets to record and show the time _____ a driver has paid for is finished

Wang Zubo was against my suggestion while Wang Xing was _____ it.[ ]

_________is the World Cup held —Every 4 years.