单项选择题

They failed to pass the exam last time, I regretted ______.

A．to be not able to help
B．being unable to help
C．being not able to helping
D．not be able to help
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单项选择题
The fireman acted quickly because lives were ______.
A．out of danger
B．in despair
C．in danger
D．out of condition
单项选择题
The English language is closely ______ to German.
A．constant
B．related
C．concerned
D．regarded
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