8. which sentence uses punctuation correctly? a. the children until the snow on the ground melted, wore their boots. b. the children, until the snow on the ground melted wore their boots. c. until the snow on the ground melted, the children wore their boots. d. the children wore their boots until, the snow on the ground melted. 9. which sentence uses punctuation correctly? a. mother sings a lullaby whenever, the baby cries. b. whenever the baby cries, mother sings a lullaby. c. mother sings a lullaby, whenever the baby cries. d. whenever the baby cries mother sings a lullaby. 10. which sentence uses punctuation correctly? a. my sister, since she is determined to become an astronaut, is taking extra classes in math and physics. b. since she is determined to become an astronaut my sister is taking extra classes, in math and physics. c. since she is determined to become an astronaut my sister is taking extra classes in math and physics. d. my sister since she is determined to become an astronaut is taking extra classes in math and physics.