[练习册] TN-10-SC

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Nobody knows exactly how many languages there are in the world, partly because of the difficulty of distinguishing between a language and the sub-languages or dialects within it, but those who have tried to count typically have found about five thousand.
  • and the sub-languages or dialects within it, but those who have tried to count typically have found
  • and the sub-languages or dialects within them, with those who have tried counting typically finding
  • and the sub-languages or dialects within it, but those who have tried counting it typically find
  • or the sub-languages or dialects within them, but those who tried to count them typically found
  • or the sub-languages or dialects within them, with those who have tried to count typically finding
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