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12. _____ there is something else to discuss, I’ll declare the meeting closed.

　 A. As　 B. While　　 C. Since　　 D. Unless

11. I thought things would get better, but _____ it is they are getting worse.

　 A. before　 B. because　 C. as　 D. after

10. ---- When did he leave the classroom?

　 ---- He left _____ you turned back to write on the blackboard.

　 A. the minute　　　　 B. the time

　 C. until　　　　　　　 D. before

9. Kathy and Anne looked _____ they were twins, for they looked so much _____ each other.

　 A. like; same　　　 　　　 B. as; like　

　 C. if; the same　　 　 　　　D. as if; like

8. Ants are the most common life form on earth. ____ tiny, their combined weight is greater than that of the combined weight of all humans.

　 A. Though　 　　　　B. Even　

　 C. Even though 　　　D. As if

7. He _____ to the lab than he set out to do the experiment.　　　

　 A. has no sooner got　 　　 B. no sooner got　

　 C. will no sooner get　 D. had no sooner got

6. ______, I’ll tell you all about it.

　 A. If I am possible　　　　　　 B. If necessary　　　　　　　

　 C. When they are necessary　　　

　 D. When I am necessary

5.　 Although he is considered a great writer, ______.

　 A. his works are not widely read　　　　　　　　　　

　 B. but his works are not widely read

　 C. however his works are not widely read　　　　　　　

　 D. still his works are not wide read

4.　 We’ll have to finish the job, ______.　　　　　　　　　 　　　　　　 　　　

A. long it takes however　　　　 B. it takes however long　　　　

C. long however it takes　　　　 D. however long it takes

3. His lecture was difficult and I didn’t know _____ he said meant in his lecture.

A. which which　　　 　　　　 B. how how

C. that that　　 　　　　　　　　　 D. what what