The key answer of exercise Think it out
The key to exercise solutions in chapter Unit 4 - Be inspirational! for the textbook Engage!, Vol. 1 with authors Monica Berlis, Jane Bowie, Heather Jones e Barbara Bettinelli from Pearson Longman
Question
Choose the correct alternative.
Answer
In questions we use the auxiliary 'did' (the past of 'do') for both regular and irregular verbs.