Нужно сделать отрицательные предложения. Form the negative sentences 1)A junior nurse cleaned all the wards two hours ago. 2)l had a bad cough and a running nose a week ago. 3) She aired this ward last morning. 4) The attending doctor examined all his patients yesterday. 5) The students helped the doctors and nurses in the hospital during the practice. 6) My friend entered the Medical College a year ago. 7)He will become a student next year. 8)They work as doctors. She works as midwife. 9) The surgeon completed the operation an hour ago.​