单项选择题

There is a______look on his face. What's on his mind

A．worry
B．worried
C．worrying
D．worring
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单项选择题
The witness has been warned that he would be getting into great trouble______report to the police.
A．were he to
B．he will
C．he was to
D．would he
单项选择题
As we all know, it was______that made his dream broken.
A．her being careless
B．because of her carelessness
C．because she was careless
D．she was so careless
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