单项选择题

A．Because having been defeatedB．Because being defeatedC……

______ three times in a row, the boxer decided to give up fighting.

A．Because having been defeated
B．Because being defeated
C．Having been defeated
D．Having defeated

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热门试题

单项选择题Not until Kentucky s Mammoth Cave had been completely explored in 1972______.

A．when was its full extent realized
B．that its full extent realized
C．was its full extent realized
D．the realimtion of its full extent

单项选择题The Sydney express was ______ for two hours by the sudden storm.

A．held down
B．held with
C．held out
D．held up