ПЛИИЗ, ПОМОГИТЕ, ОЧЕНЬ СРОЧНО, ОЧЕНЬ НУЖНО!

ПЛИИЗ, ПОМОГИТЕ, ОЧЕНЬ СРОЧНО, ОЧЕНЬ НУЖНО! Поставте слова, пожалуста в пра вильную форму: 7.We might not have stayed at this hotel if George (not/commended) it to us. 8.Tom (not/enter) for the examination if he had know that it would be so difficult. 9.If I (know) that you were ill last week, I'd have gone to see you.