a) I haven't finished my homework yet.
b) I have already done my homework.
c) I have just finished my homework.
d) He has already gone home.
e) Mark has just come back from France.
f) They have just bought a new house.
g) We haven't had lunch yet.
h) The train has already left the station.
i) Has the train left yet?
Вот, думаю, что правильно.
I have done homework already
I have just finished my homework
He has gone home already
Mark has just come back from France
They have just bought a house
We haven’t had lunch yet
The train has the station already
The train has left yet?
По моему так
