Câu 1: pens, pencils, chairs, televisions, lamps, beds, bowls, chopsticks, books, notebooks, newspapers, desk, windows, door, houses, couches, armchair, dogs, cats, tigers.
Câu 2: do - did, see - saw, think - thought, awake - awoke, understand - understood, write - wrote, become - became, come - came, bend - bent, break - broke.