17.Mr Hall understands that _____ math has always been easy for him, it is not easy for the students.

　　 A.unless　　 B.since　　　 C.although　　 D.when (NMET2003　 安徽春招 31)

16.Sally　 worked late in the evening to finish her report _____ her boss could read it first thing next morning.

　　 A. so that　　　　 B.because　　　 C.before　　 D.or else　 (NMET2003　 安徽春招 30)

15. People have heard what the President has said; They are waiting to see______ he will do.

　　 A.how　　　　　 B.what　 　　　C.when　　　　　 D.that　 (NMET2003　 安徽春招 24)

14. John shut everybody out of the kitchen ______ he could prepare his grand surprise for the party.

　　 A.which　　　　 B.when　　　　　　 C.so that　　　　　　 D.as if　　　　 (NMET2002　 30)

13. Excuse me for breaking in, ______ I have some news for you.　 (NMET2002　 22)

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

12. _____ is known to everybody, the moon travels round the earth once every month.

　　 A.It　　　　　　　 B. As　　　 　　　　C.That　　　　　 D.What　 (NMET2001　 34)

11.The film brought the hours back to me ______ I was taken good care of in that far-away village.　

　　 A.until　　　　　　 B.that　　　　　　 C.when　　　　　 D.where　　　 (NMET2001　 22)

10.A computer can only do ______ you have instructed it to do.(NMET2001　 31)

　　 A.how　　　　　　 B.after　　　　　　 C.what　　　　　 D.when

9.Someone called me up in the middle of the night, but they hung up ____ I could answer the phone.

　　 A.as　　　　　　　　　 B.since　　　　　　 C.until　　　　　　 D.before(NMET2000　 24)

8.The WTO cannot live up to its name______ it does not include a country that is home to one fifth of mankind.

　　 A.as long as　　　　　 B.while　　　　　 C.if　　　　　 D.even though (NMET2000　 21)