When was the interstate highway system mostly completed?
举一反三
- Which of the following is the road sigh for Interstate highway?
- 中国大学MOOC: Interstate 90 represents highway from east to west.
- When will the work on the highway be ?
- When ______, the museum will be open to the public next year. A: completed B: completing C: being completed D: to be completed
- Eisenhower once believed that a national highway system would ensure military success in national defense.