单项选择题

He hopes he can visit the United Nations building while he ______ in New York next summer.

A) has been
B) is
C) will be
D) shall be
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单项选择题
According to the passage, what is the advantage of a budget
A．It can help you set your goals clearly.
B．It can help you save a lot of money.
C．It can help you get rid of poor buying habits.
D．It can help you spend money wisely.
单项选择题
It has been ______ years since Galileo made the first telescope.
A．more than 390
B．over 350
C．about 1609
D．more than 30
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