22. You’ll miss the train ______ you start at once.

A. since　　　　　 　　 B. when　　　　 　 C. if　　　　　　　　　 　　 D. unless

第一节：单项填空(共15小题；每小题1分，满分15分)

21．--______football match between China and Japan was held the day before yesterday，but I failed to get_________ ticket．

----What________ pity!

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

20. ---It was the drug, not the disease, that killed the boy.

---He would be still alive today if he ______ that drug.

A.　　 not take　 B. shouldn’t have taken 　C. didn’t take 　D. hadn’t taken

19. The thief was not only condemned ____ his breaking into his neighbor’s house but also condemned　 _____ two years imprisonment.

A. to ; for 　　B. to; to 　　C. for; for 　　D. for; to