However, he was color blind, so he had to rely on the eyes of his assistant, who could easily (33) ______ all the seven colors: red, orange, yellow, green, blue, indigo and violet.

Chess, often (1 )______ to as a Royal Game, is the oldest of all board games which do not contain an element of chance.

The readings made by the sensors will be automatically converted into text messages and beamed to the Internet – (14) ________ they will appear on a dedicated ‘pigeon blog’.

Each bird will carry these in a miniature backpack, (15) ________, that is, from the camera, which will hang around its neck.

Dr. Sheldrake, the biologist (25)                       designed the study, believes that the results are convincing enough to find out through further experiments precisely how the staring effect might actually came about.

but I can (20) _____ up television easily enough. You can’t watch television at bus stops!

(6) ________, we are easily influenced by the people around us.

Or do they copy one another, perhaps (9) ________ envy or perhaps because they have shared information about the products?