I get quite depressed when I think about the damage we are ______ to the environment.

     A. having                      B. taking                       C. making                     D. causing

The ______ were told to fasten their seat belts as the plane began its descent.

     A. flyers                        B. customers                 C. passengers                D. riders

Vitamin D is necessary to aid the ______ of calcium from food.

     A. absorption                B. absorbent                  C. absorbance               D. absorbency

He may be quick ______ understanding but he isn't capable ______ remembering anything

     A. of/at                         B. at/of                          C. on/at                         D. in/of

I regret going to the cinema. I wish I ______.

     A. hadn’t gone there     B. haven’t gone there   C. didn’t go there         D. would not go there

Regardless of your teaching method, the objective of any conversation class should be for the students to practice speaking words.

     A. objective of any       B. speaking words        C. should be                  D. Regardless of

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