Read the advertisement below and choose the correct answer A, B, C, or D for each of the gaps:
This new home robot has three programmes: it can (1)_______ the house, it can clean the floor and it can interact (2)_______ people. Kitty 2012 is fast and intelligent. when we're away, it can listen for certain noises and (3)________ signals to our mobile phone if there's trouble or danger. It can move (4)_______ the house and climb steps to find dirty places and clean them. It has cameras in its eyes so it can watch people and react to them.
(1)__________