Answer:
The most correct way to write this would be U.S.,
Explanation:
I have a few opitions which are all techincally grammaticlly correct.
First, the radio signals came from the United States; then they came from Canada. (More formal)
...came from the U.S. but then.... (also grammatrically correct)
...from the U.S., then from ....
hope this helps :)
Answer:
The hall, a long winding path of white walls smelled of sharpened pencil shavings. The hall was wide and bustling with people. Now the hall still is cheery as always with the faint scent of pencil shavings.
Explanation: