17.(2013 北京，24) —Which do you prefer,tea       coffee?

—Tea,please.

   A. but   B. so   C. or   D. and

16.(2013 内蒙古包头，32) One important aim of our school is to prepare us for the future       we can face all the challenges with confidence.

   A. so far     B. so that

   C. even if   D. if only

15.(2013 四川雅安,5) Amy was reading a book       I came in.

   A. when   B. while   C. because   D. though

14.(2013 四川雅安，3) Be quick,       we?ll be late for the meet- ing-

   A. and   B. but   C. so   D. or

13.(2014 安徽，47) Spend more time talking with your parents,       they may not well understand you.

   A. or   B. so   C. and   D. but

12.( 2014 河北，32) Diana isn’t here ,       leave a message on her desk.

   A. or   B. so   C. and   D. but

11.(2014 江西，30)        jeans were invented over 100 years ago,they’re still in fashion today.

   A. Because   B. If   C. Although   D. Since

10.(2014 贵州贵阳，42) In China and some other countries,it is impolite to speak loudly       you are having a meal.

   A. before   B. while   C. after 

9.( 2014 江苏扬州，4) —The air pollution is terrible.

—It will be worse       we take action to protect the environment.

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

8.( 2014 浙江温州，6) —Excuse me.Is it my turn now?

—Not yet.Please wait on the chair       your name is called.

   A. and   B. until   C. although   D. since