The book is . Most of the teachers are in it.
–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.
–Could you please tell me _______? --Yes. They are playing in the park.
---Few young people in China know about Lady Gaga, _______? ---_______, she is quite famous here in China.
There goes the bell. Hurry up, _______ you’ll be late for class.
–Look! A man is cutting a tree on the moon. --It ______ be true. The teacher said there is no air on the moon.