If you think that skiing is a modern sport then you have to think again because Ancient skis discovered in Russia in the?
If you think that skiing is a modern sport then you have to think again because Ancient skis discovered in Russia in the 1930s turned off to be about 6000 years old.
A. modern
B. because
C. in the 1930s
D. off

Đáp án D

D sai => turn out: thực ra là, hóa ra là