options: m : you are right . professor wong 's lecture was so interesting . m : you are right . professor wong 's lecture was so exciting . m : you are right . professor li 's lecture was so disappointing , but professor wong 's was alright . m : you are right . professor wong 's lecture was so disappointing .
article: m : how did you like professor wong 's lecture ? f : i should n't have attended it . it was a waste of time .