Question
14 Dec 2019

  • Simplified Chinese (China)
  • English (US)
Question about English (US)

What is the difference between there’re still many problems to be solved before we are ready for a long stay on the Moon. and there’re still many problems to solve before we are ready for a long stay on the Moon. ?Feel free to just provide example sentences.

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  • English (US)

  • Simplified Chinese (China)
[News] Hey you! The one learning a language!

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