Choose the correct question a or b. 1.a: b: mum did. a. who called the emergency services? b. who did the emergency services call? 2. a: hey, tony. what are you doing here in ashville? b: yeah, but i'm visiting friends. a. did you move to riverdale? b. didn't you move to riverdale? 3.a: i've injured my knee and it hurts. b: a: yeah, but slowly a. can you walk? b. can't you walk? 4. a: b: she kicked a ball. a. what kicked lily? b. what did lily kick?