Travelling _____ air is faster than travelling _____ sea.
- A. on; on
- B. by; by
- C. in; on
- D. by; at
Explanation
The standard transport expressions are “by air” and “by sea.” The preposition by indicates the means of travel in both cases.
Explanation
The standard transport expressions are “by air” and “by sea.” The preposition by indicates the means of travel in both cases.