Morning exercises can help us get ready for the day, ________ we do them every day.
About ______ of the books in our school library are written in Chinese.
The soldiers ___________ a good fight against the enemies.
One of the suspects is _________ schoolboy.
When I got to the cinema, the film ___________ for 15 minutes.
It is reported that the victim was attacked _______ a gun_______ a short, fat man.