状语从句：时间、地点、原因、结果、条件、目的、让步、程度、比较与方式状语从句及其从属连词与连接短语
. Jasmine was holidaying with her family in a wildlife park ________ she was bitten on the leg by a lion.
| A．when | B．while | C．since | D．because |
He failed to ______ himself to the new environment.
| A．adopt | B．adapt | C．attach | D．adjust |
—What do the letters “DOS” ______？
—Disk Operating System.
| A．call for | B．stand for | C．head for | D．care for |
_____ is believed that the betterknown companies spend about 70 per cent of the total cost of the product itself on packaging!
| A．This | B．One | C．That | D．It |
The brave solider was willing to risk ______ his life rather than ______ himself up to the enemy.
| A．lose；give | B．losing；giving |
| C．losing；give | D．lose；giving |
If he did not know them，he would greet them with a few words about weather，but if he did，he would ask about their families or make jokes，always cutting his cloth ______his customers.
| A．according to | B．due to | C．instead of | D．up to |