Kate's dad is getting old. She will go back home to see him _____it is convenient.
| A．because | B．whenever | C．although | D．unless |
About ______ of the books in our school library are written in Chinese.
| A．four-fifth | B．four-fifths |
| C．fourth-fifths | D．fourths-fifth |
The soldiers ___________ a good fight against the enemies.
| A．put out | B．put up |
| C．put down | D．put away |
One of the suspects is _________ schoolboy.
| A．a 18-year-old | B．an 18-years-old |
| C．a 18 years old | D．an 18-year-old |
When I got to the cinema, the film ___________ for 15 minutes.
| A．has begun | B．has been |
| C．had begun | D．had been on |
It is reported that the victim was attacked _______ a gun_______ a short, fat man.
| A．by, with | B．with, by | C．for, to | D．to, for |