Question

The United Nations _______ our only hope.

• A. are
• B. is
• C. were
• D. will have been

Answer 1

Answer:

B. is

• "The United Nations" is treated as a singular entity, so the singular verb "is" is correct. In almost all cases, 'nation' is a singular collective noun, and would take a singular verb.
• Another examples - 
• The United States is at war in Iraq. 
• The United Arab Emirates is an oil-producing nation.