"the meal was so good" is a sentence in the affirmative or assertive (positive). If you change it into negative, it will qualify as an interrogative sentence: Wasn't the meal good?
If a question is already negative, it has to be changed into bare interrogative.
Was the meal so good?
Was the meal good?
Question : Select the option that expresses the given sentence in passive voice.
Mary was cooking the meal.
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile