Read these sentences and write negative ones into the Future Perfect Continuous with short forms (won't). Don’t forget about full stops.
Example 0. You will have been drawing a picture for three hours.
Answer 0. You won’t have been drawing a picture for three hours.
1. Kate will have been writing a poem since nine am.
2. John will have been talking to the teacher since one pm.
3. The dentist will have been treating patients for two years.