My uncle, who is a businessman, often travels _____ air.
My uncle, who is a businessman, often travels _____ air.
A. on
B. in
C. by
D. from
A. on
B. in
C. by
D. from
A. with
B. from
C. to
D. None
A. Down
B. By
C. Into
D. Of
A. on
B. of
C. against
D. at
A. Under
B. Below
C. Beneath
D. Underneath
A. From
B. For
C. To
D. In