Решение:
Заполняем пропуски предлогами:
- I think you should apologize for your rude words. (Apologize for something - извиняться за что-то).
- I have been dreaming of visiting London since I started learning English. (Dream of something - мечтать о чем-то).
- Justin stopped us from buying that camera. (Stop someone from doing something - помешать кому-то что-то сделать).
- I am not used to drinking coffee without milk. (Be used to doing something - привыкнуть к чему-то).
- My friends really succeed in learning French. (Succeed in something - преуспеть в чем-то).
- My sisters have always been interested in collecting Barbie dolls. (Be interested in something - интересоваться чем-то).
Ответ: for; of; from; to; in; in.