Many of the artists who ought to have appeared did not come. Here are some possible variations, with different meanings: Many of the artists who should have appeared did not come. Many of the artists who could have appeared did not come.
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father93 Many of the artistes who ought to have appeared did not come. Can I put Had to instead of Ought to have ?Your version, and those posted by Aphecca Stars are fine - the artistes did not come. If you use 'had to', it suggests that there was an obligation that was fulfilled - i.e, the artistes did come. It is therefore not possible to use 'had t