A number of students ______ playing on the ground but I don't know what the exact number______.
I’m trying to sleep. Would you mind ________ the music?
---Remember this, John. ________ you work, ______grades you’ll get. --Thanks, Miss Rose.
Although they feel tired, _________they still go on working.
Please give us________.
---His mother wants him ________at home all day. -----Really? That’s terrible.