1)They must be left for new York2)They may have gone to new York3)Maybe they went to new (although unlikely)4)can't be that they went to new York5)They should go to new York (and they left)6)They should not have to go to new York (and they left)7)They didn't have to go to new York (and they left)8)They had no reason to go to new York (and they left)9)They had to go to new York10)They had to go to new York