13. I’ll stay here _____ everyone else comes back.

A. even if 　　　　 B. as though 　 C. because 　　　　　　　　　 D. until

12. We didn’t go home _____ we finished the work.

A. since 　　　　　 B. until 　　　　 C. because 　　　　　　　　　 D. though

11. She was _____ tired _____ she could not move an inch.

A. so, that 　　　　 B. such, that 　 C. very, that 　　　　 D. so, as

10. _____ the rain stops, we’ll set off for the station.

A. Before 　　　　 B. Unless 　　　　　　 C. As soon as 　　　　　　　 D. Though

9. _____ we got to the station, the train had left already.

A. If 　　　　　　　　 B. Unless 　　　　　　 C. Since 　　　　　　　　　　 D. When

8. I learned a little Russian _____ I was at middle school.

A. though 　　　　 B. although 　　　　　 C. if　 　　　　　　　　　　　　 D. when

7. _____ she was very tired, she went on working.

A. As 　　　　　　　 B. Although 　 C. Even 　　　　　　　 D. In spite of

6. _____ still half drunk, he made his way home.

A. When 　　　　　 B. Because 　　　　　 C. Though 　　　　　　　　　 D. As

5. It is about ten years _____ I met you last.

A. since 　　　　　 B. for 　　　　　　　　　 C. when 　　　　　　　 D. as

4. _____ you go, don’t forget your people.

A. Whenever 　　 B. However 　 C. Wherever 　　　　 　　D. Whichever