Fill in the blank exercise for French past conditional I

Sofia m'a racontée une histoire très effrayante:

À ce qu'il parait, il (être) ____ 4h de l'après-midi et il ____ (faire) beau. elle (partir) ____ des courses et pendant qu'elle se promenait sur le long du boulevard, elle (rencontrer) ____ son amie. Elles ont décidé d'aller chez le bijoutier du coin et se (acheter) ____ une bague en or. Mais pendant qu'elle regardait les bracelets et les colliers, elles (croire) ____ voir qu'un homme (rentrer) ____ dans le magasin. Elles pensaient qu'il (devoir) ____ avoir à peu près 25 ans et il avait les cheveux noirs aussi. Il (porter) ____ un pantalon noir avec une chemise verte et un masque au visage. Il (tirer) ____ un revolver et il (demander) ____ de l'argent au caissier. Donc, le caissier (avoir) ____ peur et il lui (donner) ____ l'argent. Mais heureusement, un autre employé (voir) ____ le vol et (appeler) ____ la police. La police (arriver) ____ et (arrêter)____ le voleur. C'est incroyable non ! 

(Sofia told me a scary story: well, it seems like it was 4pm and it was sunny. She would have went shopping and while she was walking along the boulevard, she would've met her friend. They decided to go at the jewelry and would've bought a gold ring. But while, they were looking at the bracelets and necklaces, they would've believed to see a man enter the shop. They thought that he would've been 25 years-old and he also had black hair. He would've wore a black trouser and a green shirt with a mask on his face. He would've pulled out his gun and would've asked money to the cashier. So, the cashier would've been afraid and would've gave him the money. But fortunately, another employee would've saw the robbery and would've called the police. The police would've arrived and would've arrested the robber. incredible no!)