Choose the correct form: present perfect or present perfect continuous. 1) I have practised have been practising these tenses for three weeks. Now I understand them better. 2) Our company has been doubling has doubled its turnover over the past six months. 3) I have stared have been staring at this menu for ages now and I still haven`t decided yet. 4) I have often told have often been telling her to be extra careful when opening the car door. I'm not really surprised to hear that she hit a pedestrian. 5) I have done have been doing paperwork all day. In all, I guess I have signed about 65 letters.