单项选择题

The children cheered up when they saw hundreds of colorful balloons ______ slowly into the sky.

A．floating
B．raising
C．heaving
D．ascending
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单项选择题
She studies many books about fashion, entertaining and correct social behavior as she wants to appear ______.
A．fashionable
B．elegant
C．sophisticated
D．polished
单项选择题
We have no responsibility for the failure of our cooperation. It is your company that is in ______ of the contract.
A．crime
B．bribe
C．breach
D．damage
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