Hi fellow Teachers! I had a class today and the student asked me a question that I was unable to answer. The student was asked to correct the following sentences; -Who did say so? -Where said he we're moving to? The corrections are: -Who said so? -Where did he say we're moving to? I am unable to explain exactly why you omit the 'did' in the first instance and add it in the second. I have had a long look at the rules around asking questions and I have come up short. Can anybody please assist me? :)