At the root of volunteering is____ idea that one person may have____ ability to offer services that can help other people.
A.the, the | B.不填; an | C.an ; 不填 | D.不填,the |
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At the root of volunteering is____ idea that one person may have____ ability to offer services that can help other people.
A.the, the | B.不填; an | C.an ; 不填 | D.不填,the |