By the end of 2007, about half a million peo
ple had flooded into the city, ____ up around 10 percent of its total population.
| A．make | B．made | C．making | D．to be made |
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By the end of 2007, about half a million people had flooded into the city, ____ up around 10 percent of its total population.
| A．make | B．made | C．making | D．to be made |
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