Welche Bedeutung steckt hinter der hier vorgestellten Vokabel aus dem Bereich Talking with colleagues?

Brenda: 'You've got tickets to see who? Never! I've always been an ardent admirer of his music. He played at a company event two years ago, but I had no idea he was coming to Manchester again. Lucky you!'

an ardent admirer

Do you know what it means?

• a big fan
• a buyer
• a close relative