8.9 Раскройте скобки, поставьте глагол в Present Perfect.

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.