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Відповідь:

11)am/is- was 2)are- were 3)do-did 4)go-went 5)eat-ate 6)have-had 7)make-made 8)take-took 9)see-saw 10)fly-flew 11)sell-sold 12)tell-told 13)find-found 14)send-sent 15)buy-bought 16)bring-brought 17)teach-taught 18)think-thought

d

Пояснення: swim-swam get-got run-ran wake-woke ride-rode rise-rose sing-song come-came give-gave know-knew blow-blew drink-drank sit-sat sleep-slept keep-kept swep-swept