30. _____ as Edison was, he knew a lot about science, especially electricity.　　

　 A. Child　　　　 　　 B. The child　 　　　　　　 C. A child　 　　　　　　　　 D. such a child 　　　　　　

29. Throughout the world _____ advance has been made in science and technology is due to education which brings forth knowledge, creation and inventions.

A. whoever　　 　 B. whatever　　 　　　　　 C. what　 　　　　　　　　　 D. that　　 　　　

28. Up to Tuesday’s attack, the worst school shooting in the U.S. was in March 1998 in Jonesbora, _____ two boys, aged 11 and 13, shot and killed a teacher and four girls.

A. while　 　　　　　 B. where　　 　　　　　　　 C. when　 　　　　　　　　　 D. then

27. If I correct someone, I’ll do it with as much good humor and self- restrain as if I were the one _____.

　 A. to correct　 　　　　 B. correcting　 　　　　　 C. having corrected　 　　 D. being corrected　　　　

26. _____ the window, my finger was cut unexpectedly.　　

　 A. Clean　 　　　　　　 B. To clean　 　　　　　　　 C. While cleaning　 　　 D. While I was cleaning　　　　

25. All of the flowers now raised here have developed from those _____ in the forest.

　 A. once they grew. B. they grew once　　 　 C. that once grew　 　　　 D. once grew　　　　　　　　　　　

24. It was not _____ she took off the dark glasses _____ I realized she was a famous film star.

　 A. when, that　　　 　　　 B. until, that　 　　　　　　 C. until, when　　 　　　　 D. when , when　　　　　　

23. Take care! Don’t get the ink on your white shirt, for it _____ easily.　　　　　　　　　　　　　　　　　　　　　　

A. won’t wash out 　　　 B. won’t be washed out　 C. isn’t washed out　 　 D. isn’t washing out　　　　　　　　　　　　　

22. _____, we like it better.　　　　　　　　　　　　　　　　　　　　　　

　 A. Our house having painted white　 　　　　　 B. Having painted white 　　　　　　　　　　　　　　　　　

　 C. To painted white　　　　　　　 　　　　　　 D. our house painted white　　　　　　　　　　　　　　　　

21. Swimming in the lake, _____.　　　　　　　　　　　　　　　　　　

　 A. a rock cut Sue’s foot　　　　　 　　　　　　 B. Sue’s foot was cut　　　　　　　　　　　　　

　 C. Sue cut her foot on a rock　　　 　　　　　 D. a rock cut Sue by the foot