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
Anna refused to ______ the car keys to her husband until he had promised to wear his satiety belt.
A．hand in
B．hand out
C．hand down
D．hand over
单项选择题
We find the book quite _______: it provides us with an abundance of information on western music.
A．distracting
B．enlightening
C．amusing
D．confusing
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