2. A: What is John doing?
B: He is doing his homework.
A: How often does he do his homework?
B: Every afternoon.
3. A: What is Mary doing?
B: Mary is walking the dog.
A: How often does she walk the dog?
B: Every morning.
4. A: What are Bob & Paul doing?
B: They are cooking lunch.
A: How often do they cook lunch?
B: Every afternoon.