7 КЛАСС... РОЗВ'ЯЗАТИ РІВНЯННЯ: а) (8х+3)²-6(3х-1)(3х+1)-5(2х+1)(х-4)=3 б) (3х+1)²-100=0

1.I have no intention of… (to stay) here any longer. 2. She insisted on… (to help) me. 3. Are you fond of…(to play) chess? 4. He has very much experience in … (to teach). 5. There’s no possibility of...(to find) his address. 6. There’s little chance of …(to see) her today. 7. We have the pleasure of …(to send) you our catalogues. 8. I think of …(to go ) to the south in summer. 9. He is afraid of…( to catch) cold. 10. I’m proud of…(to have) such a son. 11. The rain prevented me from …(to come). 12. They had much difficulty in…(to find) a house.13. He is engaged in ...(to write) a book

ПОМОГИТЕ ПОЖАЛУЙСТА СДЕЛАТЬ ГЕРУНДИЙ. ЗАРАНЕЕ СПАСИБО.