Your grandfather / old / my grandfather.
A. Your grandfather is the same old as my grandfather.
B. Your grandfather is as old as my grandfather.
C. Your grandfather is old as my grandfather.
D. Your grandfather is as old my grandfather.
Đáp án đúng là: B
Dịch: Ông của cậu bằng tuổi ông tớ.
The aeroplane/ be/ considered/ one/ greatest/ inventions/ in our history.