1.Even though he has lived in China for many years, Mark still can not _______ himself to the Chinese customs.
2.He tried to _______ with the manager for has salary.
3.To some _______, Mary still does not understand this unit. But she herself does not believe so.
4.Great Britain and France will hold a _______ regarding some European economic problems.
5.Since he often travels on business, he can _______ himself to sleeping in any place he can find.