I could not concentrate because there had been a lot of______throughout the whole evening.
【正确答案】 B
【答案解析】解析：句意：我无法集中注意力，因为整晚上我都不停地受到干扰。disturbance(名词)扰乱，打扰；disturb(动词)妨碍，打扰；disturbed(形容词)心乱的，不安的；disturbing(形容词)令人不安的。