Look! There are lots of children on the beach. They are _____________ and happy.
----Would you like some coffee or tea?----________. I prefer a glass of water.
Mr. Sun has devoted most of his time _______ his teaching work.
-----Did you go to the cinema to see 3D Titanic last night?----- No, I ________ go to the cinema. The tickets are too expensive.
— Did you enjoy the outdoor training yesterday?— No, not at all! I was dead after so much hard training.
That is an important bridge __________ this old town _______ Nanjing.