P19 4-1 Listen and match. P19 4-2 Listen and talk. P19 4-3 Listen and repeat. P20 4-4 Listen and learn. P21 4-5 Listen and practise. P21 4-6 Listen and write. P22 4-7 Listen and number. P23 4-8 Listen and match. P23 4-9 Listen and choose.