People who do not smoke have less ______of suffering from lung cancer than those who do so.
| A．potential | B．pattern |
| C．preference | D．prejudice |
The plane, __________ by another plane, broke into pieces.
| A．crashed | B．to crash |
| C．to be crashing | D．have crashed |
It worries me the way he keeps __________ his mind.
| A．changed | B．changing |
| C．to change | D．being changed |
His newly built cafe, the walls of which are painted light green, is really a __________ place for us, especially after hard work.
| A．hopeful | B．thoughtful | C．peaceful | D．cheerful |
Darwin counted 225 flowering plants, __________ he collected and brought home 193.
| A．which | B．for which | C．in which | D．of which |
I am writing this E-mail to ask you for some advice on how to __________ a band.
| A．fold | B．form | C．get | D．bear |