The train is a ____means of transportation.(safe)
举一反三
- Waterway transportation includes ( ) transportation and river transportation.
- Under what condition could people enjoy these new means of transportation?As long as ____________________________________________,we can enjoy more interesting ways of transportation.
- means of transportation
- something that serves as a means of transportation
- The airplane __________ of transportation. A: is an important mean B: is an important means C: are important means D: are an important mean