30. Some states in the United States _____ people from carrying guns.
Automobile production in the United States _____.
It was in the United States that I made the ________of Professor Jones.
In the United States, ____________.
The Chinese food in the United States is usually ______ for American people.
The _______ Court is the highest court in the United States．
______ is an important part of the political process in the United States.
________ of classical ballet in the united states began around 1830.
3. The Grand Canyon in the United States is a huge canyon, ____.
Immigration also gives the United States an economic ______ in the world economy.
Many a school in the United States______to train men in theology.
______ in the United States
In the United States, the Senate is presided over by______of the United States.
Stocks in the United States______on Wednesday.
The Gross National Product of the United States ranks______ in the world.
______ is NOT a tourist attraction in the United States.
In the United States, Thanksgiving Day is the______Thursday of November.
The United States is a democracy in that______.
There are__________main reasons the car became so popular in the United States.
Some states in the United States _______ people tocarry guns.
Working hours in the United States ____________over the past 20 years.
The largest minority in the United States is the_______________. African Americans
In the united states, learning to compete successfully is__（）
In the United States, the head of the executive branch is______.
