We must study hard so that we can get a good job when we ________.
The number of the students in our school ___ 1,000, and a number of them ___ boys.
---Could we have _______ bread, please?---Sorry, we have ___________.
She says she will come to visit our school _____ next week.
---May I go home right now?---No, you____. You must finish your work first.
My mother was doing the cleaning in the sitting room ________ the telephone rang.