Not until the dedication of Yellowstone Park in the late nineteenth century（）a national park.
A: the United States had
B: did the United States have
C: when the United States had
D: the United States having
A: the United States had
B: did the United States have
C: when the United States had
D: the United States having
举一反三
- The United States （）a population of over 200 millions. A: have had B: is having C: have D: has
- As of 2018, the US armed forces are made up of the five armed-service branches, which consist of the United States Army, the United States Marine Corps, the United States Navy and the United States Air Force, and the United States Coast Guard. __________
- The two largest emitters of carbon dioxide are: A: China and the United States B: China and the United Kingdom C: Canada and the United States D: Mexico and the United States
- The national flag of the United States is .
- In 1787, ( ) of the United States was convened and the Constitution of the United States was enacted.