25. I hate smoking, _____ I don’t like drinking, either.

　　　 A.　 though　　 B. but　　 C. and　　 D. for

24. I felt tired after the work, _____ I too a long rest.

　　　 A. so　　 B but　　 C. for　　 D. or

23. Tom works hard, ______ he still failed in the exam.

　　　 A. yet　　 B. so　　 C. and　　 D. or

22. You needn’t sweep the floor, ______ it’s very clean.

　　　 A. and　　 B but　　 C. or　　 D. for

21. The shop is new, _____ it has been open only for three days.

　　　 A. for　 B. and　　 C. but　　 D. so

20. I help him _____ he helps me. We help each other.

A. but,　　 B. and　　 C. or　　 D. for

19. Maybe he has gone home, ______ he is in his office.

　　 A. or　　 B. but　　 C. nor　　 /D. yet

18. Some are reading newspaper, _____ others are playing basketball.

　　 A. or　　 B. for　　 C. so　　　 D. while

17. Tom works very hard, _____ his family is still very poor.

　　 A. yet　 B. for　　 C. so　　 D. and

16. You can study _____Chinese _____　 English.

　　 A.　 not only, but　 B. either,or　　 C. both , or　 D. only, and