Change the following sentences as indicated. i. Nobody left him a tip, ______? (Question tag) ii. His teacher knows what to do. (Into negative) iii. They had to irrigate the field. (Into negative) iv. She usually [6x1=6] (design) buildings. (Correct tense) v. Nausad said, "Wow, what a cute baby you are?" (Into indirect speech) vi. Did they eat anything? (Into passive voice) ​