Every year, _____ people go to visit their factory

It has been announced that all thecandidates______ remain in their seats until all the papers have beencollected.

____ the end of last year, I have been working on the project, and it is progressing well[ ]

There are many famous cultural relics in our country, many _______ thousands of years ago.

34. —He failed his exam again. —But what did you _____? Had he ever been working hard?