9.7.5 Ejercicio 5 - Negación del present y del past perfect continuous

  Convierta esta frases afirmativas en frases negativas!
He had been working all day, before he came home.
   
  They have been living here since 2003.
   
  She had been waiting for snow, before she knew how nice it is.
   
  Last summer the sun had been shining for many days, and then the rain came.
   
  I have been sleeping all morning and I'm tired.
   
  He had been hoping for a better job, long before he got a good offer.
   
  They have been doing nothing this morning.
   
  We could have been travelling first class.
   
  She had been having her exams right before, she went to France.
   
  We have been waiting for you here since ten, now it's twelve.
   






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