and four of a)the b)their c)its moons,the phases of Venus and spots on the sun

Galileo used mathematical calculayion as well as observation of nature ans was the first astronomer to use a telescope.With an instrument of his own a)experiment b)construction c)calculation, Galileo observed Jupiter

But what about play and a)sport b)game c)grounds

This of course is quite a)agreeable b)astute c)additional and admirable

a)dubious  b)simple  c)clumsy wall hangings etc

a)However  b)Accordingly  c)Similarly they are taught to make paper bags