galileo did not invent the telescope, but on hearing, in 1609, that such an instrument had been made, he quickly built his own device from an organ pipe and spectacle lenses
a.galileo did not invent the telescope, but on hearing, in 1609, that such an instrument had been made, he
b.galileo had not invented the telescope, but when he heard, in 1609, of such an instrument having been made,
c.galileo, even though he had not nvented the telescope, on hearing in 1609, that such an instrument had been made, he
d.even though galileo did not invent the telescope, on hearing, in 1609, that such an instrument had been made,
e. even though galileo did not invent the telescope, but when he heard, in 1609,of such an instrument being made, he
whats right and why??:hmm: