题目内容：

When two ninth-grade students found smoke coming out of the back of their school bus early Tuesday morning, their bus driver knew just what to do. Thanks to her ______ thinking, more than 50 students’ lives were ______.

While ______ a group of 56 students to their middle school in Duncan, South Carolina, on Tuesday, Teresa Stroble noticed the heavy ______ rising from the back of her bus. She ______ pulled the bus over, evacuated (疏散) the students, and radioed the transportation office to ask ______ to call 911. Firefighters arrived at the scene shortly after the fire began and quickly ______ the fire, which CBS News reports was so ______ that people driving by were able to feel its heat inside their cars. Parents of the children on the bus were ______ the fire, but thanks to Stroble, the news they received was all ______: not a single child had been hurt.

Since then, Stroble, who has been a bus driver for seven years ______ also works as a teacher’s assistant (助教), has been ______ for her brave actions. “We are so ______ of our bus driver,” headmaster Scott Turner told local CBS News. “She was ______. She also kept the students calm. She made sure they were safe. She didn’t leave the bus ______ they all left. She is our ______ today.”

The local fire department is still unsure what ______ the fire, but some say that this 1995 ______ has been known to have wiring and electrical problems.______, we’re so happy that Stroble was able to,______ on her feet and keep everyone safe and sound.

1.A. careful    B. deep    C. kind    D. quick

2.A. saved    B. shown    C. gotten    D. checked

3.A. bringing    B. driving    C. inviting    D. walking

4.A. gas    B. water    C. smoke    D. heat

5.A. gradually    B. suddenly    C. finally    D. immediately

6.A. anyone    B. someone    C. everyone    D. another

7.A. found out    B. turned down    C. put out    D. cut down

8.A. large    B. wide    C. fast    D. bright

9.A. tired of    B. angry about    C. surprised at    D. worried about

10.A. new    B. simple    C. good    D. active

11.A. or    B. and    C. but    D. so

12.A. praised    B. encouraged    C. helped    D. supported

13.A. sure    B. fond    C. certain    D. proud

14.A. serious    B. mad    C. calm    D. positive

15.A. after    B. until    C. if    D. because

16.A. hero    B. friend    C. teacher    D. leader

17.A. controlled    B. fixed    C. ordered    D. caused

18.A. base    B. bus    C. source    D. detail

19.A. Also    B. Besides    C. However    D. Later

20.A. think    B. run    C. stand    D. look