问题
选择题
15. A world-famous ballet company’s 42-year absence from Beijing will end it brings a new production to the stage this week.
A．since
B．when
C．unless
D．until
答案
答案：B
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15. A world-famous ballet company’s 42-year absence from Beijing will end it brings a new production to the stage this week.
A．since
B．when
C．unless
D．until
答案：B