1) She has to write an interesting article. 2) It will be able to write an interesting article. 3) She can not have written this article. 4) May she have written this article? 5) Can she have written this article? 6) It was decided that she would write an article. 7) You should not go by train 8) You should not have gone by train. 9) She may have gone there by train. 10) May I not go by train? 11) Can it be that you go by train?? 12) You ahould go there/ They may be waiting for you. 13) You could have gone there by train, why did you go by plane? 14) Why did you have to go there?