Choose the word (A, B, C or D) that best fits the blank space in the following passage.  

Isaac Newton is one of the (1)_______________ men in the history of scientists. He was born in a small village of Wootsphorpe (2) _______________ England. His father was a poor farmer. When the boy was fourteen, his father (3) ______________ . Newton left school and helped his mother on the farm. But the boy didn’t like (4)_____________, he was fond of the poetry and mathematics. Therefore, Newton was sent back to school. (5) ____________ he left school, Newton studied at Cambridge University. He lectured on mathematics at Cambridge University. His greatest discovery is the (6) ____________ of gravitation.

Isaac Newton is one of the (1)_______________ men in the history of scientists.