Them are superstitions attached to numbers; even those ancient Greeks believed that all numbers and their multiple have some mystical significance. (1) ______ Those numbers between 1 and 13 were on particular to have a powerful (2) ______ influence over the affairs of men. For example, it is commonly said that luck, good or bad, comes in threes; if an accident happens, two more of the same kind may be expected soon shortly afterwards. The arrival of a letter will be followed by two others (3) ______ within a certain period. Another belief involving the number three has that it is unlucky to light (4) ______ three cigarettes from the one match. If this happens, the bad luck that goes with the deed falls upon the person which cigarette was the last to be lit. (5) ______ the ill-omen linked to the lighting of three things from one match or candle goes to at least the 17(上标)century and probably earlier It was believed that (6) ______ three candles alight at the same time would be sum to bring good luck; (7) ______ one, two, or four, were permissible, and never just three. (8) ______ Seven was another significant number, usually regarded as a bringer of good luck. The ancient astrologers believed that the universe was governed by seven planets; students of Shakespeare will recall that life of man was divided into seven ages. Seven horseshoes nailed to a house will protect it away all evils. Nine is usually thought of as (9) ______ a lucky number because it is the product of three time three. It was (10)______ much used by the Anglo Saxons in their charms for healing.