中国大学MOOC: The most efficient ________ of transportation in the mountainous area was camel 20 years ago.
举一反三
- The most efficient ________ of transportation in the mountainous area was camel 20 years ago. A: meaning B: mean C: means D: meaningfulness
- Many years ago, a lot of factories were _______ from big cities to the mountainous areas in case of war.
- When was the man in New York A: About two years ago. B: About one year ago, C: About three years ago.
- A water power station (build) ________ in the area several years ago.
- 中国大学MOOC: I ____________ from a college two years ago.