Polio, although it is eradicated in the United States, it continues elsewhere and is able to be brought into the country by visitors.
Polio, although it is eradicated in the United States, it continues elsewhere and is able to be
Polio, although eradicated in the United States, it still continues elsewhere and can be
Although still continuing elsewhere, polio has been eradicated in the United States and could be
Although having been eradicated in the United States, polio still continues elsewhere and is capable of being
Although eradicated in the United States, polio continues elsewhere and could be
having been eradicated 正在已经被废除 不好
GMAT里,当be capable of doing sth,have the capability of doing sth和can/could在选项里同时存在时,通常can/could是更优的。
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