单项选择题

Barbara ______ in doing it again though she had failed more than a dozen times.

A．insisted
B．persisted
C．assisted
D．consisted
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单项选择题
He was ______ of having asked such a silly question.
A．tired
B．fond
C．ashamed
D．miserable
单项选择题
______ a big hole on the road, the car was stopped.
A．Having seen
B．Seeing
C．The driver seeing
D．When seeing
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