Помогите пожалуйста разобраться с заданием, по английскому языку!
Не как не могу понять эту карточку!
Помогите пожалуйста

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(не уверена насчёт последнего)