—Haven’t seen you for ages ! Do you still work in Xi’an ? —______. It’s four years since I worked there .
At the ________ news, there was a ________ expression on his face.
We were scared to death when the fire ________. Fortunately, it was put out before it caused much damage.
He has ________ letters to answer and has to work from morning to night.
It’s ________ for the Shenzhou 7 spaceship that every Chinese feels cheerful and proud.
It is general believed that teaching is ________ it is a science.