._____ the chapter four times, I finally understood the author's theory.
—Who would you like to have_____with you? —Julie. I enjoy staying with her, you know.
—Could I play computer games for a while, Mum? I’ve finished all my homework. —Oh, my dear, if you_____.
—Where did you meet the visitor? —It was in the school _____I worked five years ago.
_____leaves the office last must close all the windows and the door.
—What do you think of French? —In my opinion, French is_____English.