11. (1) _____ in thought, he almost ran into the car in front of him.
(2) _____ his lovely dog, he looked for it everywhere.
(3) _____ his dog, he took it in the scary bushes.
A. Losing B. Having lost C. Lost D. To lose
12. (1) The research is so designed that once _____ nothing can be done to change it.
A. begins B. having begun C. beginning D. begun
(2) _____ in the queue for almost half an hour, he suddenly realized that he forgot his code.
A. Having waited B. Waited C. To wait D. Waiting
13. (1) --- What do you think made the woman so upset? --- ____ weight.
(2) --- What can I do to join in the league? --- _____ weight.
A. As she put on B. Put on C. Putting on D. Because of putting on
(3) --- Why are the students so diligent these days? --- _______ the entrance exams.
A. Pass B. To pass C. Passing D. Having passed
14. (1) Time should be made good use of _____ our lessons well.
(2) Time should be spent _____ English by everybody at present.
A. learning B. learned C. to learn D. having learned
15. (1) It was only with the help of the local guide ____.
(2) It was snowing heavily _____.
(3) Only with the help of the local guide _______.
A. was the mountain climber rescued B. then the mountain climber was rescued
C. when the mountain climber was rescued D. that the mountain climber was rescued
16. (1) Never _____ time come again.
(2) Never _____ he _____ a single sheep.
A. has … (lost) B. will … (lose) C. will … (lost) D. lose
17. (1) -- ______ was it ____ they discovered the entrance to the underground palace?
-- Totally by chance.
(2) --- _____ was it _____ they discovered at the entrance to the underground palace?
--- A helmet.
A. What, that B. How, that C. When, how D. Where, that
18. (1) I have nothing to confess. _______ you want me to say?
(2) I hope you don’t mind, but _____ you were born?
A. What is it that B. What it is what C. How is it that D. Where is it that
19. (1) Is this factory _______ you visited the other day?
(2) Is this the factory _____ you visited the other day?
A. the one B. that C. where D. when
20. (1) Was it ____ she heard with her ears ______ really made her frightened?
(2) Was it _____ she had been _____ really made you all surprised?
A. what, that B. it, that C. where, that D. what, /
答案：11. CBD 12. DA 13. CBB 14. CA 15. DCA 16. CA 17. BA 18. AD 19. AB 20. AC