_________do you have PE lessons?–Three times a week.
We can eat in the dining hall. But we _______ eat in the classroom.
Do you know the man ________ visited the United States in February?–Yes. He is Chinese Vice-President Xi Jinping. He said it was his ____ visit to the United States.
The teachers often tell their pupils ____ across the road when the traffic light is red.
Did he write all the articles _________ or did anyone help him?[ ]