1.The old man lives____in the village.but he doesnot feel___

1.The old man lives____in the village.but he doesnot feel____.
lonely与alone在这里怎么填?
2.we can see more than 2000 stars______a clear night ____ our eyes.
A.on in B in in c on with D.with with
3.They ______most of the universe so far.
A.have visited B.have visited to