negative prefixes
perfect
imperfect
All children ___ chocolate.
All children adore chocolate.
fly
flew
satisfactory
unsatisfactory
My father is in Greece now. He ___ at a very nice hotel.
My father is in Greece now. He is staying at a very nice hotel.
fall
fell
sociable
unsociable
Jenny always ___ nice expensive clothes.
Jenny always wears nice expensive clothes.
catch
caught
familiar
unfamiliar
– Why ___?
– I’ve lost my keys.
– Why are you crying?
– I’ve lost my keys.
sing
sang
accurate
inaccurate
When ___?
When does he normally get up?
think
thought