Read the text and the following questions.

For each of the numbered gaps there is a set of choices in the following questions. Select the correct letter choice from the following questions. Enter the letter in the empty box.

As soon as his son Charles had left the room, the old man turned to me again. His eyes narrowed and he beckoned to me to lean forward. He began to talk in an urgent whisper, (1) there were only the two of us in the room. 'It's a perfect crime, don't you think?' he said. 'I'm going to be rich! Just think! I'm going to (2) bank in all Paris!' His eyes shone with excitement. 'Yes, dear boy, I will simply walk in, fill my briefcase with money and walk out again,' he said. He sat back, his face radiating self-confidence. I was certain now that he (3) head. 'But, won't somebody try to stop you?' I asked, as gently as I could. 'Ah, that's (4) it, my simple young friend: I will be invisible!' As he said this, he looked anxiously towards the door before continuing. 'Look!' he said. He opened his briefcase, and allowed me to peer in. It was stuffed with what (5) dead plants, leaves and blades of grass. 'Herbs. That's the secret. I have perfected a formula to make myself invisible.'