Decisionmakersmusthavesomewayofdeterminingofseveralalternativesisbest.（）

Not until recently_____that Thompson had ben telling the truth all along

At the end of the conference, all the_(participate) were asked to fill out a questiolmaire

If you had been in better health, we___ (allow) you to join them in the work.

The fixed star was a planet.（）