As well as costing the Middle East dearly in terms of human life, conflict! (冲突) _______ the region around $ 12 trillion since 1991, according to a report by the Strategic Foresight Group.
| A．is also cost | B．had also cost | C．will also cost | D．has also cost |
The reason why we were so late is________
| A．because of the car’s breaking down | B．That the car breaking down |
| C．because the car broke down | D．that the car broke down |
Believe it or not, he’ll cheat if he thinks he can ______ it.
| A．catch up with | B．catch sight of | C．get along with | D．get away with |
Never form the habit of smoking because it ______ human beings.
| A．does harm with | B．is harmful to | C．is harm for | D．does harmful to |
—It is rather cold here. Shall we light a fire?
—No, we ______because things are easy to catch fire.
| A．won’t | B．can’t | C．mustn’t | D．needn’t |
It is said that his health ______ by years of hard working.
| A．has been destroyed | B．has destroyed | C．is destroying | D．had been destroyed |