Q200
Traveling . . . . . . . . air is faster than traveling . . . . . . . . sea.
A.
on, on
B.
by, by
AnswerC.
in, on
D.
by, at
Answer: Option B
Solution
Answer: Option B
Solution:
When you are talking about general ways to travel, use the preposition "by". For example, you can travel by train, by car, by bus, by truck, by plane, by motorcycle, by helicopter, by air, by sea or by boat.