Odpowiedź:
18a : didnt see
18b: saw, didnt see
19a:paid the bill
19b: paid
20a: never flown a plane
20b: fly
21a: bit
21b: bit
22a: platned
22b: didnt plant
23a: wrote to the paper
23b: wrote
24a: never drunk vodka
24b: drunk, didnt drink
Wyjaśnienie: