The number of people invited ___fifty, but a number of them____ absent fordifferent reasons．

He didn’t make ______ clear when and where the meeting would be held.

I want to save money and then travel all over the world. [ ]

The station is the factory. [ ]

The Qingming Festival which is also called______Pure Brightness Festival, falls on April 5 every year, it is______time-honored tradition(悠久的传统) for the Chinese to honor their ancestors.