. There are three basic ways of _____ language to writing, and all known graphic systems use one or a combination of these.
| A．committing | B．attaching | C．comparing | D．relating |
—Are the new machine working?
—Yes. Three million tons of coal________exploited every year in the city.
| A．is |
| B．are |
| C．has |
| D．have |
Everyone here thanks the firefighters for the things they have done to prevent fires________the environment safer.
| A．to make |
| B．to making |
| C．from making |
| D．make |
He tried to________to cook a meal on the island but he failed.
| A．light fire |
| B．make a fire |
| C．make fire |
| D．set fire |
Bajin, for________experiences were dangerous and unforgettable, was an old man always telling the truth.
| A．whom |
| B．whose |
| C．that |
| D．which |
________bird flu outbreak has killed 545 chickens and ducks in________central China and led authorities to destroy 2,487 others.
| A．The; the |
| B．The; 不填 |
| C．A; the |
| D．A; 不填 |