A) pens, classes, roads, days, cats, brushes, desks, tables, plates, foxes, rooms, ladies, knives, chairs, buses, heroes, matches, ways, houses, families, flags, towns, wolves, countries, lions, parks, plays, dictionaries, thieves, keys
B) babies, plants, lemons, peaches, bananas, brushes, waiters, queens, men, shops, eyes, geese, sheep, teeth, children, oxen, deer, tragedies, tornadoes, theatres, airports
1. What's wrong?(What happened?) - John is ill(sick).
2. Is he in the hospital? - Yes, but he is better today.
3. Is Tom at home? - No, he isn't. He is usually at home at 5.
4. I'm usually at home at 4 on Saturday.
5. Where's Benny? - He is in the park.
6. What is he? - He is a doctor.
7. Is doctor Sanford at home? - He is still in the hospital.
8. Benny is in the park, isn't he?
9. When are they usually at home on Saturday? - He's usually at home at 6 on Saturday. ( At 6.)
10. There're always glad to see you.
11. What a pity he is not at home.
12. What a pity( Unfortunately) she is still in her bed.