to advertisements constantly can help to change people’s opinions over time
A. Exposed
B. Being exposed
C. Exposing
D. To be exposed
网友回答
A. Exposed
(答案→)B. Being exposed
C. Exposing
D. To be exposed
解析：考查非谓语动词。be exposed to暴露在，在句中作主语，故用动名词形式。句意：不断的接触广告能够随时帮助改变人们的观念。故B正确。