填空题

Were it__________________(要不是大气层),the stars could be seen shining at any time in the day.

【参考答案】

not for the atmosphere
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__________________(在地震中遭到破坏),all the tall buildings in the city had to be rebuilt.
单项选择题
A．privateB．publicC．commercialD．central
A．private
B．public
C．commercial
D．central
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