8.9
Our son has learnt how to read.
Doctors have cured many deadly disease.
Scientists have split the atom.
You have grown since the last time I saw you.
English has become one of the most courses at the University.
My English really has improved since I took private lessons.
I think I have seen that movie before.
He has never traveled by train.
Joan has learnt two foreign languages.
People have traveled to the moon.
Have you seen that movie? I have seen that movie twenty times.
I think I have met him once before.
Have you been to France? I have been three times.
James has finished his homework yet.
Bill hasn't arrived yet.
The train hasn't stopped.
Mary has loved chocolate since she was a little girl.
She has been in English for six months.