• 2021-04-14
    There are many artificial ways of causing sleep, but to the author, they are alike in their ineffectuality.
  • 内容

    • 0

      Who is the author of “On Getting Off to Sleep”?

    • 1

      5.There are many ways to ________ and _________.

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      Air pollution, together with overpopulation, _______many problems in big cities today. A: are causing B: is causing C: are caused D: is caused

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      There are many ways to_________this problem.

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      Many people try to think of many ways _____________ (reduce) the pollution.