247. He found it quite impossible to learn _____ well in less than 6 months so he registered for the next semester(term).
| A．Russian | B．Russians | C．Russia | D．Russias |
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247. He found it quite impossible to learn _____ well in less than 6 months so he registered for the next semester(term).
| A．Russian | B．Russians | C．Russia | D．Russias |
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