I don’t have to introduce him to you __ you know the boy. A. until B unless C. since D but
—Don’t be late next time!—_______
There _______ a football match next week. Shall we go and watch it?
Our teacher often keeps us _______ the classroom, so we should keep our classroom _______.
—_______ do you play computer games?—Every night.
—Would you mind _______here?—I’m sorry about that. I’ll go somewhere else.