He ... never seen a dolphin in real life.
have
has
I ... heard a noise upstairs. What was it?
has
have
We aren't hungry, we ... eaten lunch.
has
have
My computer ... crashed!
have
has
The weather ... been really cold.
have
has
My parents ... found new jobs in the city.
has
have
The students ... passed their exams.
has
have
Make - Made - ...
maken
made
maden
Be - Was/Were - ...
beed
been
gone
See - Saw - ...
seed
seen
sawed
I ... cheated in an exam.
hasn't
haven't
They ... been to China.
haven't
hasn't
The cat ... caught a mouse.
haven't
hasn't
Drink - Drank - ...
drink
drunken
drunk
Sing - Sang - ...
sung
sunged
sang
Take - Took - ...
taken
taked
tooken
