Teaching children to be （ ）in both technology and basic skills like writing by hand is a balancing act that is as much a task for parents as for teachers.
By turning this knob to the right you can（ ）the sound from the radio.
The （ ）of medical knowledge are being pushed farther outwards as time goes on.
Electric vehicles are potential game changers in transportation, a sector which （ ）largest share of oil consumption.
Which of the following sentences expresses "probability"?
Human beings are social (A) animals who usually prefer not living (B) in (C) physical or psychological isolation (D).