Turn the following sentences into the negative: 1.That man has left the house; 2.The little children have crossed the road; 3.You have known the answer; 4.I have had breakfast; 5.You have enjoyed the play; 6.The woman has read the letter; 7.You have been ill; 8.I have spent several days here; 9.We have been very busy; 10.The students have entered the room; 11.You have gone to the cinema; 12.I have travelled by train; 13.The little boy has thought of Robin Hood; 14.The pupils have drawn many flowers; 15.You have ridden the new bicycle. Vă rog Mulțumesc.