Many companies give away small quantities of their produce as samples ______ people can try them before buying them.
| A．if | B．because | C．so that | D．since |
________ for knowledge is very strong.
| A．His eagerness | B．His eager |
| C．He is eager | D．That his being eager |
I think Bob , ______Peter, are to blame for the accident .
| A．other than | B．rather than |
| C．less than | D．more than |
It is no use ______ to persuade him _______ smoking because he has been addicted to it.
| A．to try; to quit | B．to try; quit |
| C．trying; quit | D．trying; to quit |
Eager to play computer games, the little boy pretended __________ his homework .
| A．to finish | B．finishin |
| C．having finished | D．to have finished |
Studies shows that people are more __________ to suffer from back problems if they always sit before computer screens for long hours.
| A．likely | B．possible | C．probable | D．sure |