16. _____he was, Jack solved the complicated problem successfully.

　　　 A. Pupil as　 B. A pupil though　 C. Although a pupil　 D. Even though a pupil

15. ---I will ask our physics teacher to explain Newton’s Second Law of Motion.

　 ---Great. That’s just _____ most of the students still don’t understand.

　　　 A. What　 B. why　　 C. where　　 D. how

14. ---You didn’t wait for Mr. Black last night, did you?

　 ---Yes, but we _______. He didn’t return home at all.

　 A. couldn’t have　 B. needn’t have　 C. didn’t need to　 D. should have

13. Look! The string _______. Shortly afterwards you will have enough electricity.

　 A. is charged　 B. is to charge　 C. is getting charged　　 D. is got changing

12. When the habitat of _____ species is changed or destroyed, the animal or plant has to

either adapt to _____ change or find _____ new home.

A. the; the; a　　 B. a; the; the　　 C. a; the; a　　 D. the; a; the

11. The flight had been put off, _____, we had no choice but to wait.

　 A. in this case　 B. in that case　 C. in which case　 D. in whose case

10.　 ---Have they decided to give up trying?

---No. Instead, the students have decided to _______ a peaceful solution.

A. come in terms with　　 B. come up　　 C. come up with　　 D. come across

9. ---It’s a long time since we met last. Haven’t you graduated from college yet?

　 --- ____. I ____ English for another year in Nanjing University before I graduate.

　　　 A. No; study　 B. Yes; have studied　 C. No; am studying　 D. Yes; studied

8. In Sydney the Chinese team got 28 gold medals, _______of all the competing countries.

A. ranking the third　 B. ranking a third　 C. to rank third　 D. ranking third

7. 　---Hurry up, the train is leaving in half an hour.

　 　---Oh, I forgot the tickets. I ______ to fetch them.

　　　 A. will be going　 B. will go　 C. go　　 D. am to go