现学现用
1. W e must go o (越过) the mountain.
2. The girl has a beautiful _______. So she loves singing songs and wants to be a singer in the future.
A. sound B. voice C. smile D. accent
3. —Can a plane fly _________ the Atlantic Ocean?
—Yes, but it needs to go ________ the clouds for hours.
A. across; throug h B. through; across
C. across; across D. through; through
