Odpowiedź:
1. (...) Have you tried to put a poster in the school?
2. You must remember not to forget about your assignment on Friday. (Trochę dziwne to zdanie, ale nie wiem jak inaczej to można zrobić)
3. I encouraged him not to drop Spanish.
4. I can't afford those boots.
5. Janice stopped her dance classes two years ago.
6. We watched the gardener planting some flowers in front of the building. (...)
7. Does John fancy going to the concert on Sunday?
8. Kuba is not allowed to use his dad's computer.