More and 90 percent of the calcium in the human body is in the skeleton.

     A. the                            B. human                      C. is                               D. and

Drying food by means of solar energy is an ancient process applying wherever climatic conditions make it possible.

     A. means of                  B. applying                   C. Drying                      D. make it possible

Not only ______ the exam but she also got a scholarship.

     A. she passes                 B. has she passed          C. she has passed          D. did she pass

-“Jenny’s always wanted to get to the top of her career, ______?”

-“Yes, she’s an ambitious girl.”

     A. isn’t she                    B. hasn’t her                 C. has she                      D. hasn’t she

She has just bought______.

     A. an interesting French old painting.                B. an old interesting French painting.

     C. a French interesting old painting.                  D. an interesting old French painting.

Mr Pike______ English at our school for 20 years before he retired last year.

     A. was teaching            B. has been teaching     C. is teaching                D. had been teaching

______, I decided to stop trading with them.

     A. Despite of the fact that they were the biggest dealer

     B. Though being the biggest dealer

     C. Being the biggest dealer

     D. Even though they were the biggest dealer

 It was found that he lacked the ______ to pursue a difficult task to the very end.

     A. obligation                 B. engagement              C. commitment             D. persuasion

George wouldn’t have met Mary______ to his brother’s graduation party.

     A. if he has not gone                                          B. had not he gone

     C. had he not gone                                             D. if he shouldn’t have gone

______ her inexperience, her failure to secure the contract was not surprising.

     A. By virtue of             B. With regard to          C. In view of                D. In recognition of