His father threatened to throw him out, but he knew it was a(n) ______ threat. A. void B. unoccupied C. empty D. vacant
His father threatened to throw him out, but he knew it was a(n) ______ threat.
A. void
B. unoccupied
C. empty
D. vacant
His father threatened to throw him out, but he knew it was a(n) ______ threat.
Chọn C