1. The sky was cloudless_______the sun was shining.

　　A. but B. and C. or D. for

　　2. Some are reading newspapers,____others are playing chess

　　A. or B. for C. so D. while

　　3. ______ does he write well, ______speaks well.

　　A. Not only...but

　　B. Not ...but

　　C. Either ... or

　　D. Both...and

　　4. I must be off now, _______my sister is expecting me.

　　A. or B. so C. for D. and

　　5. It was raining,_______we had to stay at home.

　　A. or B. so C. for D. and

　　6. This test is rather difficult;_______it is not beyond the reach of the students.

　　A. but B. so C. or D. for

　　7. You can______stay in school______go with me to my hometown.

　　A. not only...but

　　B. either ... or

　　C. both ... and

　　D. only ...and

　　8. Let's go at once,_______we'll be late.

　　A. and B. or

　　C. so D. yet

　　9. He could not remember_____shelf he had kept it on.

　　A. what B. which

　　C. that D. how

　　10. I'm sorry______your mother is ill.

　　A. whom B. if

　　C. that D. how

　　11. Mr. Fisher wondered_____his daughter had ever been fond of music.

　　A. if B. what

　　C. who D. that

　　12. She forgot____ she had put the key.

　　A. when B. what

　　C. where D. how

　　13. I'll put off my visit to the exhibition______you can come with me.

　　A. what B. because

　　C. until D. unless

　　14. Knock at the door______ you come into the room.

　　A. though B. as

　　C. before D. than

　　15. Fewer people came_____I expected.

　　A. as if B. so that

　　C. since D. than