1. Lisa will surely succeed ____ she works very hard.
　　(A) when (B) while (C) because (D) after
　　2. Young people should go ____ they are most needed by the motherland.
　　(A) where (B) when (C) to where (D) than
　　3. Go and wash the skirt ____ you can wear it tomorrow.
　　(A) then (B) and (C) so (D) so that
　　4. I will finish writing the paper ____ it takes me all night.
　　(A) so that (B) however (C) even if (D) before
　　5. He talks ____ he knew everything about it.
　　(A) as if (B) even if (C) if (D) if only
　　6. We can’t claim ____ what we don’t know.
　　(A) knowing (B) to be known (C) to know (D) have known
　　7. His uncle narrowly escaped ____ in the famous battle.
　　(A) to kill (B) being killed (C) killing (D) to be killed
　　8. I regret ____ your advice.
　　(A) having accepted (B) not having accepted (C) to accept (D) not to accept
　　9. David tried ____ the window, but he could’t. It was stuck.
　　(A) close (B) to close (C) closing (D) having closed
　　10. Don’t warry, Philip is quite used ____ such heavy traffic as this.
　　(A) to driving (B) to have driven (C) to be driving (D) to drive
　　11. If you want ____ you have to get the fund somewhere.
　　(A) that the job is done (B) the job done (C) to have done the job (D) the job that is done
　　12. Go straight into the cave and find out what’s in there, ____?
　　(A) don’t you (B) will you (C) do you (D) can you
　　13. All ____ is a continuous supply of the basic necessites of life.
　　(A) which is needed (B) for our needs (C) the thing needed (D) that is needed
　　14. The minister had his secretaries ____ a press conference.
　　(A) arrange (B) to arrange (C) arranging (D) arranged
　　15. there is no point ____ the piano,unless you practise every day.
　　(A) to learn to play (B) in learning to play (C) by learning to play (D) having learned to play
　　16. No sooner had we reached the top of the hill ____ we all sat down to rest.
　　(A) when (B) then (C) than (D) until
　　17. ____ in 1943 ____ the harmful smog madeits appearance in Los Angeles.
　　(A) Only/that (B) It was/then (C) That it was/when (D) It was/that
　　18. ____ she first heard of the man referred as a specialist.

　　(A) That was from Stephen (B) It was Stephen whom (C) It was from Stephen that (D) It was Stephen that
　　19. My camera ____ to take pictures in cloudy or sunny conditions.
　　(A) be adjusted (B) was adjusted (C) was to adjusted (D) can be adjusted
　　20. Nuclear science ____ to benifit the people rather than harm them.
　　(A) should be developed (B) will be developed (C) can be developed (D) may be developed