I turned to the headmaster and he promised to do everything _ his power to help. me out.
You look so tired,It's time that you ___
An idea ___ into my mind that we should go there by bus instead of on foot.
---You’ve made great progress in your studies of English, haven't you? ---Yes, but much___.
The hall __ we saw the film was very clean.
--Let us see your pass, ___. ---Sure.