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

15. She didn’t go to school yesterday, ______ he had hurt her legs while climbing the mountain.

　 A. but　　 B. however　　 C. or　　 D. for　

14. _______ did she go to see her father, ______ did she want her father to come.

　 A. Either,or 　B. Not , only　　 C. No sooner, than　 D. Neither, nor

13. That was our first lesson, _______ she didn’t know all our names.　　　

A. for　　　　　 B. but　　　　 C. so　　　　　　 D. or

12. Rose is an English girl, ______ she doesn’t like English food.

A. yet　　　 　　B. so　　　　　　 C. for　　　　　 D. and

11. The street was wet, _______ it rained last night.

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

10. It’s getting dark, _______they’re still working.

　 A. and　　　 B. but　　　　 C. so　　　　 D. or