单项选择题

Leaders from all over the world （） together at the United Nations since 1952.

A．work
B．are working
C．have worked
D．have been working

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单项选择题
Splendid （） the architecture of Manhattan with its one hundred and more skyscrapers.

A．is
B．are
C．do
D．does
单项选择题
He plays football for Queen's and hopes （） to play for the university this year.

A．to choose
B．to be chosen
C．choosing
D．being chosen
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