12. You can only be sure of you have at present;you cannot be sure of something you might get in the future.

   A. that;what   B. what; /

   C. which;that   D. /; that 

11. John knows so much about the stars that I am sure it would be impossible to find his .

   A. similar   B. reflection

   C. same      D. equal

10. You must be careful not to borrow more money than you can to repay.

   A. offer   B. provide

   C. supply   D. afford

9. The way the professor introduced to the students was easy to understand.

   A. in which   B. in that

   C. that   D. of which

8. If every developed country makes a contribution the less developed countries,our world will become much more beautiful.

   A. to help   B. to helping

   C. help   D. helps

7. The manager agreed to lend us the building condition that we must keep it clean and return it within a month.

   A. in   B. with   C. on   D. of

6. (2014 •焦作高一检测) I've talked a lot about walking. , I want to say it is a cheap,safe and enjoyable form of exercise.

   A. In addition   B. In conclusion

   C. In all       D. Above  all

5. (2014 •哈尔滨高一检测) After ten years,he as manager and we had to find another man for his position.

   A. worked   B. returned

   C. resigned   D. began

4. At last,the jury (陪审团) a conclusion that the person was not guilty.

   A. drew   B. reached

   C. came to   D. all above

3. (2014 •西安高一检测) Would you please read through my composition and correct the mistakes in it ?

   A. if some   B. if possible

   C. if only   D. if any