Does Coire Need the Subjunctive

The French word croire is an irregular verb that means to believe, and it may require the subjunctive, depending on whether it is used affirmatively, negatively or interrogatively. An affirmative sentence calls for the indicative, rather than the subjunctive. Youll use the subjunctive when ​croire is used to express doubt or uncertainty. Examples Je crois quil a raison.I think hes right. Je ne crois pas quil ait raison.I dont think hes right. Crois-tu quil ait raison ?Do you think hes right?